tree.json

{
  "java": {
    "node_id": "java-cd78d5d1fb3749ecbc21ee6e8542a724",
    "keywords": [],
    "children": [
      {
        "Java初阶": {
          "node_id": "java-71a99d2763734420aee110c5c5b904d8",
          "keywords": [],
          "children": [
            {
              "Java概述": {
                "node_id": "java-43e7bb3ee96c44e29df8e2f4063be49a",
                "keywords": [],
                "children": [
                  {
                    "什么是Java": {
                      "node_id": "java-b45c34278b714bfbb6a6d80817e24639",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "JDK的下载": {
                      "node_id": "java-238f8a0558a949f29e56dd830eae1b8b",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "配置JDK": {
                      "node_id": "java-007e13f0e4db49a1b181b1561104873c",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "Java的版本": {
                      "node_id": "java-32823e681af949c4ae26e0bf9a9977a2",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "JavaAPI文档": {
                      "node_id": "java-36e8a46b02764541acd2800e1b189403",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "Java的应用领域": {
                      "node_id": "java-733ca772d4c14e94974c0fa98c41820b",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "Java API文档": {
                      "node_id": "java-eefa4050fc314922a8df1b5f101dcae1",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "使用IDE": {
                      "node_id": "java-ee4e218c826b4f5cb22150ce60a5880b",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "测试开发环境": {
                      "node_id": "java-6d12bdbdeb7144aeb3649d50e0f06007",
                      "keywords": [],
                      "children": []
                    }
                  }
                ]
              }
            },
            {
              "第一个Java程序": {
                "node_id": "java-379b792dde024090a7ed43b392ece2c5",
                "keywords": [],
                "children": [
                  {
                    "编辑Java源代码": {
                      "node_id": "java-55cfe3ca4d8f4611855475c2ea3737af",
                      "keywords": [
                        "输出",
                        "main",
                        "程序入口"
                      ],
                      "children": []
                    }
                  },
                  {
                    "编译Java程序": {
                      "node_id": "java-5fa1abbd66474a9e98f62e3e172dbdfb",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "根据CLASSPATH环境变量定位类": {
                      "node_id": "java-45cdc91007ba431e87124a6a9c15725e",
                      "keywords": [],
                      "children": []
                    }
                  }
                ]
              }
            },
            {
              "Java的运行机制": {
                "node_id": "java-1c7f65aae3e344c39de8791b67e1fbb7",
                "keywords": [],
                "children": []
              }
            },
            {
              "Java的基本语法": {
                "node_id": "java-fc5d065c53404449bf726b5e441706c1",
                "keywords": [],
                "children": [
                  {
                    "Java的基本语法格式": {
                      "node_id": "java-efb87004230b4680a32c6584112c6f20",
                      "keywords": [
                        "输出",
                        "循环",
                        "for"
                      ],
                      "children": []
                    }
                  },
                  {
                    "Java中的注释": {
                      "node_id": "java-c668b26b90ab4982bd906933809d6049",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "Java中的关键字": {
                      "node_id": "java-0021d9d14dfc429cab17b4dd912651b6",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "Java中的标识符": {
                      "node_id": "java-1d41e245176e437e8103e481bc91aa3b",
                      "keywords": [],
                      "children": []
                    }
                  }
                ]
              }
            },
            {
              "Java中的变量与常量": {
                "node_id": "java-19afc527fd62401aaf89ff81a250d624",
                "keywords": [],
                "children": [
                  {
                    "变量的定义": {
                      "node_id": "java-b8e6eab222ad4a06b53b4d00182769db",
                      "keywords": [
                        "变量",
                        "赋值",
                        "定义"
                      ],
                      "children": []
                    }
                  },
                  {
                    "变量的数据类型": {
                      "node_id": "java-ac26535850ef4aaf8bb9fec08bc47825",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "Java中的常量": {
                      "node_id": "java-37cc072d202340f5ae3a6e829416edc7",
                      "keywords": [
                        "常量",
                        "定义",
                        "变量",
                        "final"
                      ],
                      "children": []
                    }
                  },
                  {
                    "变量的作用域": {
                      "node_id": "java-4657e7685f1543ddbaba55b2562b4ec9",
                      "keywords": [
                        "常量",
                        "定义",
                        "作用域"
                      ],
                      "children": []
                    }
                  }
                ]
              }
            },
            {
              "Java中的运算符": {
                "node_id": "java-624bba5cef024d2d8ebf54ded569343d",
                "keywords": [],
                "children": [
                  {
                    "比较运算符": {
                      "node_id": "java-e858a75415dd4f6cb36cb023f4bb9ed8",
                      "keywords": [
                        "大于",
                        "小于",
                        "等于",
                        "比较",
                        "不等于"
                      ],
                      "children": []
                    }
                  },
                  {
                    "逻辑运算符": {
                      "node_id": "java-79c8e7f14bee4898a52f3103a29ae564",
                      "keywords": [
                        "逻辑运算符",
                        "组合",
                        "优先级"
                      ],
                      "children": []
                    }
                  },
                  {
                    "算术运算符": {
                      "node_id": "java-5d46f8b7ac974df8a24a04805c4a167b",
                      "keywords": [
                        "算术运算符",
                        "优先级"
                      ],
                      "children": []
                    }
                  }
                ]
              }
            },
            {
              "选择结构语句": {
                "node_id": "java-630751c514da49b9b675fddc5b2d0418",
                "keywords": [],
                "children": [
                  {
                    "if条件语句": {
                      "node_id": "java-d4a802d353d648a0a4c90daf60774cf3",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "switch条件语句": {
                      "node_id": "java-180cf0806d374fa4b10fdaebcc946d89",
                      "keywords": [],
                      "children": []
                    }
                  }
                ]
              }
            },
            {
              "循环结构语句": {
                "node_id": "java-672a697e644041cda2a90dc1ca90d2a9",
                "keywords": [],
                "children": [
                  {
                    "do…while循环语句": {
                      "node_id": "java-9814a131da364cd0a3933b640ddb421c",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "for循环语句": {
                      "node_id": "java-911127b38b884ab4bb5a35365c41833b",
                      "keywords": [],
                      "children": []
                    }
                  }
                ]
              }
            },
            {
              "集合": {
                "node_id": "java-43b99c9c823a4ff798631990686d3088",
                "keywords": [],
                "children": [
                  {
                    "集合概述": {
                      "node_id": "java-3b6988c9edda4332ab2b2bde76ce74ba",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "Collection接口": {
                      "node_id": "java-73271e880f0843f69437427bfc557ff2",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "List接口": {
                      "node_id": "java-c6a5d8d2c6394aae9ba504a2d2e922e8",
                      "keywords": [],
                      "children": [
                        {
                          "List接口简介": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-9027b2dc889a4898b4cc4197d6b2fe21",
                            "title": "List接口简介"
                          }
                        },
                        {
                          "ArrayList集合": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "ArrayList集合"
                          }
                        },
                        {
                          "LinkedList集合": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "LinkedList集合"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "Collection集合遍历": {
                      "node_id": "java-04044ad9b1914b928a0f48be4478f9ac",
                      "keywords": [],
                      "children": [
                        {
                          "Iterator遍历集合": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-ba1b82874f154652bffd62c7b7b542ab",
                            "title": "Iterator遍历集合"
                          }
                        },
                        {
                          "foreach遍历集合": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "foreach遍历集合"
                          }
                        },
                        {
                          "JDK 8的forEach遍历集合": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "JDK 8的forEach遍历集合"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "Set接口": {
                      "node_id": "java-243249b52e4449d1acc2f61ac3d492c4",
                      "keywords": [],
                      "children": [
                        {
                          "Set接口简介": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-bd790481aa4d405383426891c6e4ef2a",
                            "title": "Set接口简介"
                          }
                        },
                        {
                          "HashSet集合": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "HashSet集合"
                          }
                        },
                        {
                          "TreeSet集合": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "TreeSet集合"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "Map接口": {
                      "node_id": "java-585898e24579448980def03a33fd553c",
                      "keywords": [],
                      "children": [
                        {
                          "Map接口简介": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-5ec3563f06184fa29eb5748b33ca4450",
                            "title": "Map接口简介"
                          }
                        },
                        {
                          "HashMap集合": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "HashMap集合"
                          }
                        },
                        {
                          "Map集合遍历": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "Map集合遍历"
                          }
                        },
                        {
                          "TreeMap集合": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "Properties集合": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "常用工具类": {
                      "node_id": "java-61ba5b89d4284c1b9d59436bce805640",
                      "keywords": [],
                      "children": [
                        {
                          "Collections工具类": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-a07f943448184bf985a9f929567ed94e",
                            "title": "Collections工具类"
                          }
                        },
                        {
                          "Arrays工具类": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "Arrays工具类"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "聚合操作": {
                      "node_id": "java-2d3c1265286d4b58a87650a633ba2373",
                      "keywords": [],
                      "children": [
                        {
                          "聚合操作简介": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-4c3e7ab968f04393af0c008d7ab6fcc7",
                            "title": "聚合操作简介"
                          }
                        },
                        {
                          "创建Stream流对象": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "创建Stream流对象"
                          }
                        },
                        {
                          "Stream流的常用方法": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "Stream流的常用方法"
                          }
                        },
                        {
                          "Parallel Stream（并行流）": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "Java集合框架": {
                      "node_id": "java-860b3800347942d2857795251974730b",
                      "keywords": [],
                      "children": [
                        {
                          "集合接口与实现分离": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-9d394513b1664cfc9686a8593f23975c",
                            "title": "集合接口与实现分离"
                          }
                        },
                        {
                          "泛型实用方法": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "泛型实用方法"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "集合框架中的接口": {
                      "node_id": "java-b65776c30f4e4aaf99d8bc8b66855e7c",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "链表": {
                      "node_id": "java-bfbb4319eb60496583ace9aca561c7ab",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "数组列表": {
                      "node_id": "java-a8e9302bf3f34c67b6d0d1d1dd5b8e06",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "散列集": {
                      "node_id": "java-53a2b2fe37394f808059240a7a65c347",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "树集": {
                      "node_id": "java-b295e8ba38ed4e3c90ea0f7b0d70039e",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "优先队列": {
                      "node_id": "java-d2a2357798784f6fbcd875b94165e350",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "映射": {
                      "node_id": "java-7625240ab0254b198142c52926465f42",
                      "keywords": [],
                      "children": [
                        {
                          "基本映射操作": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-80f2c854a2eb484aab8f9b793999c99e",
                            "title": "基本映射操作"
                          }
                        },
                        {
                          "更新映射条目": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "更新映射条目"
                          }
                        },
                        {
                          "映射视图": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "映射视图"
                          }
                        },
                        {
                          "弱散列映射": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "链接散列集与映射": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "枚举集与映射": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "标识散列映射": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "算法": {
                      "node_id": "java-61f2876689974eec9689c33ef8a3f4cb",
                      "keywords": [],
                      "children": [
                        {
                          "二分查找": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-ded68731826d4bce9d963538e39a10ef",
                            "title": "二分查找"
                          }
                        },
                        {
                          "简单算法": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "简单算法"
                          }
                        },
                        {
                          "批操作": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "批操作"
                          }
                        },
                        {
                          "编写自己的算法": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "遗留的集合": {
                      "node_id": "java-7f1d9ed947de49588bb7c8a02e052c10",
                      "keywords": [],
                      "children": [
                        {
                          "属性映射": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-3b67670fa36943f086358d867932c6ab",
                            "title": "属性映射"
                          }
                        },
                        {
                          "栈": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "栈"
                          }
                        },
                        {
                          "位集": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "位集"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "Java集合简介": {
                      "node_id": "java-91db3dd24ea34bca8c6e9d0935d33d9c",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "编写equals方法": {
                      "node_id": "java-8bfe31396801426e8ed6f8b8a8190b80",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "编写equals和hashCode": {
                      "node_id": "java-bb2a2b6d7b114799b01aa89bafbdab86",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "使用TreeMap": {
                      "node_id": "java-6d9ccc979da54411ac65fccd1a12071e",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "使用Properties": {
                      "node_id": "java-7b0b78c00f934f7f958dcf7107243ae1",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "使用Deque": {
                      "node_id": "java-ff4a16d20df24eda93d843749e777a76",
                      "keywords": [],
                      "children": []
                    }
                  }
                ]
              }
            },
            {
              "IO": {
                "node_id": "java-bff54193c9594a788b63428c761aa0db",
                "keywords": [],
                "children": [
                  {
                    "IO概述": {
                      "node_id": "java-34a5e258543140209c0a7ae93e90f334",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "字节流": {
                      "node_id": "java-bc0a001b9405489db020b8cc77e5d205",
                      "keywords": [],
                      "children": [
                        {
                          "字节流概述": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "字节流概述"
                          }
                        },
                        {
                          "字节流读写文件": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-7a190721f9e14fc28a4dc1892ffe0845",
                            "title": "字节流读写文件"
                          }
                        },
                        {
                          "文件的拷贝": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "文件的拷贝"
                          }
                        },
                        {
                          "字节流的缓冲区": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "字节缓冲流": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "File类": {
                      "node_id": "java-f7b0c5b43fc14e7aaf54257d96469d21",
                      "keywords": [],
                      "children": [
                        {
                          "File类的常用方法": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-d2fa4eea5f30456c8fd7ca8ef2ad5eab",
                            "title": "File类的常用方法"
                          }
                        },
                        {
                          "遍历目录下的文件": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "遍历目录下的文件"
                          }
                        },
                        {
                          "删除文件及目录": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "删除文件及目录"
                          }
                        },
                        {
                          "创建文件对象": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "文件操作": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "文件夹操作": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "目录列表器": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "目录实用工具": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "目录的检查及创建": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "文件的创建与删除": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "获取文件信息": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  }
                ]
              }
            },
            {
              "操作符": {
                "node_id": "java-d131f1a8df9446d383ed50bbd172c4bb",
                "keywords": [],
                "children": [
                  {
                    "更简单的打印语句": {
                      "node_id": "java-abfea328567247299dda87840637e3cb",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "使用Java操作符": {
                      "node_id": "java-a9431628c39b4daf993bc3768ff8a44d",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "优先级": {
                      "node_id": "java-e59d9d4b749543be8821b1d6a05c2afc",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "赋值": {
                      "node_id": "java-d8af839c715a43d6a7d18e5999f2bcde",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "算术操作符": {
                      "node_id": "java-a4cc291dc2264301a87f361de4b8d6ea",
                      "keywords": [],
                      "children": [
                        {
                          "一元加、减操作符": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-a6e0d49965584c4392cff18cb591a332",
                            "title": "一元加、减操作符"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "自动递增和递减": {
                      "node_id": "java-f6e6b9e930ef46699788339fc7322f18",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "关系操作符": {
                      "node_id": "java-21247e52fb0849699959f78321bc855e",
                      "keywords": [],
                      "children": [
                        {
                          "测试对象的等价性": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-59cbb9821eed4c28a3e365e8ce963865",
                            "title": "测试对象的等价性"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "逻辑操作符": {
                      "node_id": "java-a7a6076a60e140f18b63b6ea3574eed2",
                      "keywords": [],
                      "children": [
                        {
                          "短路": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-633e7df8ce304791b9981fccb636b3e8",
                            "title": "短路"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "按位操作符": {
                      "node_id": "java-58320af2f24648198eda32c4da587b5d",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "移位操作符": {
                      "node_id": "java-0d405a41281d424ca00dca4e18c12b61",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "三元操作符if-else": {
                      "node_id": "java-27584561349847fa84c7905215131621",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "字符串操作符 + 和 +=": {
                      "node_id": "java-8fad68e2479a4e93875c6ca1746baef6",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "使用操作符时常犯的错误": {
                      "node_id": "java-e284668a00844feb8b38b3073e3cb2b6",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "类型转换操作符": {
                      "node_id": "java-b075138ebd0145338459d7a9de46aef7",
                      "keywords": [],
                      "children": [
                        {
                          "截尾和舍入": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-805d92324ad14bf48a50084d9af74a8c",
                            "title": "截尾和舍入"
                          }
                        },
                        {
                          "提升": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "提升"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "Java没有“sizeof”": {
                      "node_id": "java-d5974aecec2f48839637253d09367815",
                      "keywords": [],
                      "children": []
                    }
                  }
                ]
              }
            },
            {
              "控制执行流程": {
                "node_id": "java-05024fbfd53a4d88978d6c78d7ff06bf",
                "keywords": [],
                "children": [
                  {
                    "true和false": {
                      "node_id": "java-09da728d4cac4f51bcb205b7170dd83b",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "if-else": {
                      "node_id": "java-85a126a6ba39488aaabd2d4015353175",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "迭代": {
                      "node_id": "java-73fd080a97c34ae2a89bd60c9510c409",
                      "keywords": [],
                      "children": [
                        {
                          "do-while": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-0238e72ddb834cde8c0059fb0a213d57",
                            "title": "do-while"
                          }
                        },
                        {
                          "逗号操作符": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "逗号操作符"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "Foreach语法": {
                      "node_id": "java-722dc1cccbc74369b9bff5ac580bc649",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "return": {
                      "node_id": "java-66019537247040fcbb6d74a29f47819f",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "break和continue": {
                      "node_id": "java-1b0927bc3a3342869b4fc981abf17ff6",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "臭名昭著的“goto”": {
                      "node_id": "java-f7ba772bd92e4ee48ebb231d7cd86d07",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "switch": {
                      "node_id": "java-05144fa9daf94a64ad0667eab1d6cc9a",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "对象导论": {
                      "node_id": "java-30e9c233490b48cab3d429d4baa652d4",
                      "keywords": [],
                      "children": [
                        {
                          "抽象过程": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-a087266d273941c1b48ff7a6439c3763",
                            "title": "抽象过程"
                          }
                        },
                        {
                          "每个对象都有一个接口": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "每个对象都有一个接口"
                          }
                        },
                        {
                          "每个对象都提供服务": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "每个对象都提供服务"
                          }
                        },
                        {
                          "被隐藏的具体实现": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "复用具体实现": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "伴随多态的可互换对象": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "单根继承结构": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "容器": {
                            "keywords": [],
                            "children": [
                              {
                                "参数化类型（范型）": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              }
                            ],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "初始化与清理": {
                      "node_id": "java-fd953c58b2024be0b11f829c3b7f36fd",
                      "keywords": [],
                      "children": [
                        {
                          "用构造器确保初始化": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-9917fd6871e845bf873eec19aa99a353",
                            "title": "用构造器确保初始化"
                          }
                        },
                        {
                          "缺省构造器": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "缺省构造器"
                          }
                        },
                        {
                          "成员初始化": {
                            "keywords": [],
                            "children": [
                              {
                                "指定初始化": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              }
                            ],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "成员初始化"
                          }
                        },
                        {
                          "构造器初始化": {
                            "keywords": [],
                            "children": [
                              {
                                "初始化顺序": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "静态数据的初始化": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "显式的静态初始化": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              }
                            ],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "数组初始化": {
                            "keywords": [],
                            "children": [
                              {
                                "可变参数列表": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              }
                            ],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "枚举类型": {
                            "keywords": [],
                            "children": [
                              {
                                "基本enum特性": {
                                  "keywords": [],
                                  "children": [
                                    {
                                      "将静态导入用于enum": {
                                        "keywords": [],
                                        "children": [],
                                        "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                      }
                                    }
                                  ],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "向enum中添加新方法": {
                                  "keywords": [],
                                  "children": [
                                    {
                                      "覆盖enum的方法": {
                                        "keywords": [],
                                        "children": [],
                                        "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                      }
                                    }
                                  ],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "switch语句中的enum": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "values（）的神秘之处": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "实现但不继承随机选取": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "为组织而使用接口": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "使用EnumSet替代标志": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "使用EnumMap": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "常数相关的方法": {
                                  "keywords": [],
                                  "children": [
                                    {
                                      "使用enum的职责链": {
                                        "keywords": [],
                                        "children": [],
                                        "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                      }
                                    },
                                    {
                                      "使用enum的状态机": {
                                        "keywords": [],
                                        "children": [],
                                        "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                      }
                                    }
                                  ],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "多路分发": {
                                  "keywords": [],
                                  "children": [
                                    {
                                      "使用enum分发": {
                                        "keywords": [],
                                        "children": [],
                                        "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                      }
                                    },
                                    {
                                      "使用EnumMap分发": {
                                        "keywords": [],
                                        "children": [],
                                        "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                      }
                                    }
                                  ],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "使用枚举类型设置常量": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "使用枚举类型的优势": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              }
                            ],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "类初始化块": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "Java访问权限修饰词": {
                            "keywords": [],
                            "children": [
                              {
                                "包访问权限": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "public:接口访问权限": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "private: 你无法访问": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "protected：继承访问权限": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              }
                            ],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "类的访问权限": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "组合语法": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "继承语法": {
                            "keywords": [],
                            "children": [
                              {
                                "初始化基类": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              }
                            ],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "代理": {
                            "keywords": [],
                            "children": [
                              {
                                "创建代理对象": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "代理类的特性": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              }
                            ],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "在组合与继承之间选择": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "protected关键字": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "添加一组元素": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "容器的打印": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "List": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "迭代器": {
                            "keywords": [],
                            "children": [
                              {
                                "ListIterator": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              }
                            ],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "LinkedList": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "Stack": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "Set": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "Map": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "Queue": {
                            "keywords": [],
                            "children": [
                              {
                                "PriorityQueue": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              }
                            ],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "Collection和Iterator": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "Foreach与迭代器": {
                            "keywords": [],
                            "children": [
                              {
                                "适配器方法惯用法": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              }
                            ],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "通过异常处理错误": {
                      "node_id": "java-d11b7f01004c443ea6226d174ba1e3fa",
                      "keywords": [],
                      "children": [
                        {
                          "概念": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-74dba10624904700bca41dd2cfab0d17",
                            "title": "概念"
                          }
                        },
                        {
                          "捕获异常": {
                            "keywords": [],
                            "children": [
                              {
                                "try块": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                                  "title": "try块"
                                }
                              },
                              {
                                "异常处理程序": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "f?inally子句": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "try-with-Resources语句": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "分析堆栈轨迹元素": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              }
                            ],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "捕获异常"
                          }
                        },
                        {
                          "创建自定义异常": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "异常说明": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "捕获所有异常": {
                            "keywords": [],
                            "children": [
                              {
                                "栈轨迹": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "重新抛出异常": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "异常链": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              }
                            ],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "Java标准异常": {
                            "keywords": [],
                            "children": [
                              {
                                "特例: RuntimeException（运行时异常）": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              }
                            ],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "使用finally进行清理": {
                            "keywords": [],
                            "children": [
                              {
                                "finally用来做什么": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "在return中使用finally": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "缺憾：异常丢失": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              }
                            ],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "构造器": {
                            "keywords": [],
                            "children": [
                              {
                                "使用构造器执行初始化": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "构造器重载": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              }
                            ],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "异常匹配": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "其他可选方式": {
                            "keywords": [],
                            "children": [
                              {
                                "历史": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "观点": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "把异常传递给控制台": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "把“受检查异常”转换为“不受检查的异常”": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              }
                            ],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "异常使用指南": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "并发编程": {
                      "node_id": "java-f372302ab33f4bfc875688641393d369",
                      "keywords": [],
                      "children": []
                    }
                  }
                ]
              }
            },
            {
              "类和接口": {
                "node_id": "java-e06f6fb888f940b4894e835d9afc9138",
                "keywords": [],
                "children": [
                  {
                    "类和面向对象": {
                      "node_id": "java-461a08a44ae845018b7f0356ea928085",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "抽象类": {
                      "node_id": "java-a02b334b2e364161badae34636a0284f",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "接口": {
                      "node_id": "java-5d28bfbed25f4ae2b4d21fc1f2222e49",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "匿名类": {
                      "node_id": "java-b06b5b2c7a6b44cc87744168729b31e6",
                      "keywords": [],
                      "children": []
                    }
                  }
                ]
              }
            },
            {
              "输入和输出": {
                "node_id": "java-64b6e35bfb53488a9ed0abae657a4000",
                "keywords": [],
                "children": [
                  {
                    "InputStream类型": {
                      "node_id": "java-fc2dfe1a80f64143b4ad339378ba61da",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "OutputStream类型": {
                      "node_id": "java-cc8c2e511db54a2ca2ee798f2cdbd03b",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "读取输入": {
                      "node_id": "java-602feb8538b7419aa660c552c3a40884",
                      "keywords": [],
                      "children": []
                    }
                  }
                ]
              }
            },
            {
              "Reader和Writer": {
                "node_id": "java-32396d02d16640b49e4bfc6beee5b2f2",
                "keywords": [],
                "children": [
                  {
                    "数据的来源和去处": {
                      "node_id": "java-a9ae14246ec447fb969860752ddfc947",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "更改流的行为": {
                      "node_id": "java-4cbbcc28c12644b38b2f3c67aa77b814",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "未发生变化的类": {
                      "node_id": "java-5841af2d0b914d9b98c9c686a21721b7",
                      "keywords": [],
                      "children": []
                    }
                  }
                ]
              }
            },
            {
              "文件读写的实用工具": {
                "node_id": "java-77486c83e4a74b2dace24e1d78dccfc1",
                "keywords": [],
                "children": [
                  {
                    "读取二进制文件": {
                      "node_id": "java-8cc2f962c00f49b99437c4c6cf4bc5d3",
                      "keywords": [],
                      "children": []
                    }
                  }
                ]
              }
            },
            {
              "进程控制": {
                "node_id": "java-f7c6d831a9084704a3e91ec91a8e6d7b",
                "keywords": [],
                "children": []
              }
            }
          ]
        }
      },
      {
        "Java中阶": {
          "node_id": "java-b4719189dc7544228ef1b578548be47f",
          "keywords": [],
          "children": [
            {
              "IO（输入输出）": {
                "node_id": "java-3dc422fd227a45db83e38ba6fe0003c0",
                "keywords": [],
                "children": [
                  {
                    "流概述": {
                      "node_id": "java-9d6d81f6283d414ba54d97cb25373b7c",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "输入输出流": {
                      "node_id": "java-4395c520c7514a97a792922acd5937bb",
                      "keywords": [],
                      "children": [
                        {
                          "输入流": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-a397c10e1a904c419811483b97c8d8b9",
                            "title": "输入流"
                          }
                        },
                        {
                          "输出流": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "输出流"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "文件输入输出流": {
                      "node_id": "java-132615c6b56b4ea883622abf5b81128d",
                      "keywords": [],
                      "children": [
                        {
                          "FileInputStream类与FileOutputStream类": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-a42ac36c7aae462f9ef8edf8b6212528",
                            "title": "FileInputStream类与FileOutputStream类"
                          }
                        },
                        {
                          "FileReader类与FileWriter类": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "FileReader类与FileWriter类"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "带缓冲的输入输出流": {
                      "node_id": "java-56b6286ea8fa4b27b79e8b213db7204a",
                      "keywords": [],
                      "children": [
                        {
                          "BufferedInputStream类与BufferedOutputStream类": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-5af453276cf74fa68de03f85636a127d",
                            "title": "BufferedInputStream类与BufferedOutputStream类"
                          }
                        },
                        {
                          "BufferedReader类与BufferedWriter类": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "BufferedReader类与BufferedWriter类"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "带缓存的输入输出流": {
                      "node_id": "java-454658fa2a694039b3610120dd13d49d",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "数据输入输出流": {
                      "node_id": "java-41dbdf68bd6a4b52a8673a57dcd6ee3e",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "ZIP压缩输入输出流": {
                      "node_id": "java-822ae98d5b294e699b7ed1bc6ffb9425",
                      "keywords": [],
                      "children": [
                        {
                          "压缩文件": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-c2a40bea599142e1bafe5c65e5f49e92",
                            "title": "压缩文件"
                          }
                        },
                        {
                          "解压缩ZIP文件": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "解压缩ZIP文件"
                          }
                        }
                      ]
                    }
                  }
                ]
              }
            },
            {
              "RandomAccessFile": {
                "node_id": "java-3c0553280d2a4b60983a5ae18e7112a4",
                "keywords": [
                  "随机",
                  "访问",
                  "文件"
                ],
                "children": []
              }
            },
            {
              "对象序列化": {
                "node_id": "java-ec1081c263a84d41b692d4821d8254e6",
                "keywords": [],
                "children": []
              }
            },
            {
              "使用JDBC操作数据库": {
                "node_id": "java-952e5473dc85415b8d737648a1d20351",
                "keywords": [],
                "children": [
                  {
                    "JDBC概述": {
                      "node_id": "java-150a9965d3e34a19943b4bd5ab2d31bb",
                      "keywords": [],
                      "children": [
                        {
                          "JDBC-ODBC桥": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-a045157a68894eacb0e79c72bea465c8",
                            "title": "JDBC-ODBC桥"
                          }
                        },
                        {
                          "JDBC技术": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "JDBC技术"
                          }
                        },
                        {
                          "JDBC驱动程序的类型": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "JDBC驱动程序的类型"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "数据库操作": {
                      "node_id": "java-fd66a76b04b84d8da4454f6f9728aca0",
                      "keywords": [
                        "数据库",
                        "操作",
                        "添加",
                        "修改",
                        "删除",
                        "查询"
                      ],
                      "children": [
                        {
                          "数据库基础": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-bd09b1ca4af648e2a5435f96d4704e4b",
                            "title": "数据库基础"
                          }
                        },
                        {
                          "数据查询": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "数据查询"
                          }
                        },
                        {
                          "动态查询": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "动态查询"
                          }
                        },
                        {
                          "添加、修改、删除记录": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "数据库基础知识": {
                            "keywords": [],
                            "children": [
                              {
                                "什么是数据库": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "数据库的种类及功能": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "SQL语言": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              }
                            ],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "向数据库发送SQL语句": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "处理查询结果集": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "顺序查询": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "模糊查询": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "预处理语句": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  }
                ]
              }
            },
            {
              "NIO": {
                "node_id": "java-3f06cb54c165459b85d0c7f225e6acb7",
                "keywords": [],
                "children": [
                  {
                    "NIO概述": {
                      "node_id": "java-5daee2a48ed2413fa38467811ea5ee23",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "Buffer（缓冲器）": {
                      "node_id": "java-e622e94340ee4f00ae2aec33047cb19f",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "Channel（通道）": {
                      "node_id": "java-1cbb9d1ea7c74caeaf8d88c2aad75965",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "字符集和Charset": {
                      "node_id": "java-984b508fc9a54650aa9509eeb198f925",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "文件锁": {
                      "node_id": "java-338c2cfa55b346a0a0cd4dfc61c40ae6",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "Path接口": {
                      "node_id": "java-386113b4f6274eb591e1f01b39f0c8ce",
                      "keywords": [
                        "Paths",
                        "Path"
                      ],
                      "children": []
                    }
                  },
                  {
                    "Files工具类": {
                      "node_id": "java-868e1323bfdf4c239a6552a45a30d48d",
                      "keywords": [],
                      "children": []
                    }
                  }
                ]
              }
            },
            {
              "网络编程": {
                "node_id": "java-94b280240e7c4f67b1512eb20fd9beaa",
                "keywords": [],
                "children": [
                  {
                    "网络编程基础": {
                      "node_id": "java-59e7173695814c90858bc221e8688329",
                      "keywords": [
                        "网络",
                        "通信",
                        "协议"
                      ],
                      "children": [
                        {
                          "网络通信协议": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-8573a8cf4f914940b790785687f38b34",
                            "title": "网络通信协议"
                          }
                        },
                        {
                          "IP地址和端口号": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "IP地址和端口号"
                          }
                        },
                        {
                          "InetAddress": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "InetAddress"
                          }
                        },
                        {
                          "UDP与TCP协议": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "UDP通信": {
                      "node_id": "java-f031c1ea305e4617bb1d9f2c4d41f009",
                      "keywords": [],
                      "children": [
                        {
                          "UDP通信简介": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-9118d12d817b45e5a69ecdaca6283d01",
                            "title": "UDP通信简介"
                          }
                        },
                        {
                          "DatagramPacket": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "DatagramPacket"
                          }
                        },
                        {
                          "DatagramSocket": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "DatagramSocket"
                          }
                        },
                        {
                          "UDP网络程序": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "UDP案例——聊天程序": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "TCP通信": {
                      "node_id": "java-d1499a6f75a04d038344ce776d1c658a",
                      "keywords": [],
                      "children": [
                        {
                          "TCP通信简介": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-8664d9e4dcc04e77a24cfd6445635315",
                            "title": "TCP通信简介"
                          }
                        },
                        {
                          "ServerSocket": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "ServerSocket"
                          }
                        },
                        {
                          "Socket": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "Socket"
                          }
                        },
                        {
                          "简单的TCP网络程序": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "多线程的TCP网络程序": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "TCP案例——文件上传": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "网络编程的基础知识": {
                      "node_id": "java-0a41df2154834670a9facf2ff7530d6b",
                      "keywords": [],
                      "children": [
                        {
                          "网络基础知识": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-1cf4ca055b604ea49c6b762596371c71",
                            "title": "网络基础知识"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "Java的基本网络支持": {
                      "node_id": "java-1e8ef0cdeec443d8addaaa79b760c6b1",
                      "keywords": [],
                      "children": [
                        {
                          "使用URLDecoder和URLEncoder": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-f880ae75add64feaae9a85ea7c9367b2",
                            "title": "使用URLDecoder和URLEncoder"
                          }
                        },
                        {
                          "URL、URLConnection和URLPermission": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "URL、URLConnection和URLPermission"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "基于TCP协议的网络编程": {
                      "node_id": "java-a89aa3ff88c1429396c8c20e12c17801",
                      "keywords": [],
                      "children": [
                        {
                          "TCP协议基础": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-7e9947e48fc6409b93ba1e3b5002e247",
                            "title": "TCP协议基础"
                          }
                        },
                        {
                          "使用ServerSocket创建TCP服务器端": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "使用ServerSocket创建TCP服务器端"
                          }
                        },
                        {
                          "使用Socket进行通信": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "使用Socket进行通信"
                          }
                        },
                        {
                          "记录用户信息": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "半关闭的Socket": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "使用NIO实现非阻塞Socket通信": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "使用AIO实现非阻塞通信": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "基于UDP协议的网络编程": {
                      "node_id": "java-e424fbf24fc84b339db1b836c54ce647",
                      "keywords": [],
                      "children": [
                        {
                          "UDP协议基础": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-f28b8ebe51b34e4db9b94cfa6b0cbac7",
                            "title": "UDP协议基础"
                          }
                        },
                        {
                          "使用DatagramSocket发送、接收数据": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "使用DatagramSocket发送、接收数据"
                          }
                        },
                        {
                          "使用MulticastSocket实现多点广播": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "使用MulticastSocket实现多点广播"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "使用代理服务器": {
                      "node_id": "java-cb9fdf69e28f40aca9ef741b9c8bc925",
                      "keywords": [],
                      "children": [
                        {
                          "直接使用Proxy创建连接": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-367580927af845268b72979f1e1e16be",
                            "title": "直接使用Proxy创建连接"
                          }
                        },
                        {
                          "使用ProxySelector自动选择代理服务器": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "使用ProxySelector自动选择代理服务器"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "Java 11标准化的HTTP Client": {
                      "node_id": "java-dd60957a0a7f4155a68aea7c6807d504",
                      "keywords": [
                        "websocket",
                        "get",
                        "post",
                        "delete",
                        "put",
                        "请求"
                      ],
                      "children": [
                        {
                          "发送同步GET请求": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-01931200f6684a0bba54c8fe79070301",
                            "title": "发送同步GET请求"
                          }
                        },
                        {
                          "发送带请求体的请求": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "发送带请求体的请求"
                          }
                        },
                        {
                          "发送异步请求": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "发送异步请求"
                          }
                        },
                        {
                          "WebSocket客户端支持": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "基于WebSocket的多人实时聊天": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  }
                ]
              }
            },
            {
              "类型信息": {
                "node_id": "java-7b912e7b9d1547e9ba78b26cb78e254c",
                "keywords": [],
                "children": [
                  {
                    "Class对象": {
                      "node_id": "java-1133afe68c004a0ea2ad957f0acb061e",
                      "keywords": [],
                      "children": [
                        {
                          "类字面常量": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-b94faa1fac2c4ffe8f8fcbdc8fc89ee9",
                            "title": "类字面常量"
                          }
                        },
                        {
                          "泛化的Class引用": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "泛化的Class引用"
                          }
                        },
                        {
                          "新的转型语法": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "新的转型语法"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "类型转换前先做检查": {
                      "node_id": "java-48593d705752415e95c42b09d36bc2a4",
                      "keywords": [
                        "instanceof"
                      ],
                      "children": [
                        {
                          "使用类字面常量": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-76e90c4c1397452b9569be2a05553053",
                            "title": "使用类字面常量"
                          }
                        },
                        {
                          "动态instanceof": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "动态instanceof"
                          }
                        },
                        {
                          "递归计数": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "递归计数"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "注册工厂": {
                      "node_id": "java-c4cbf0c25cbf47c4892a5f6635be9826",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "instanceof与Class的等价性": {
                      "node_id": "java-feca89c3fb9e4bcaba3f1f95e8ad4753",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "反射：运行时类信息": {
                      "node_id": "java-42b26ca8a2384dcfb02fca6e159ace67",
                      "keywords": [
                        "annotation"
                      ],
                      "children": [
                        {
                          "类方法抽取器": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-aa383e03d51a4ea588ee1b04192ab556",
                            "title": "类方法抽取器"
                          }
                        },
                        {
                          "Class类与Java反射": {
                            "keywords": [],
                            "children": [
                              {
                                "访问构造方法": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                                  "title": "访问构造方法"
                                }
                              },
                              {
                                "访问成员变量": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "访问方法": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              }
                            ],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "Class类与Java反射"
                          }
                        },
                        {
                          "使用Annotation功能": {
                            "keywords": [],
                            "children": [
                              {
                                "定义Annotation类型": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              },
                              {
                                "访问Annotation信息": {
                                  "keywords": [],
                                  "children": [],
                                  "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                                }
                              }
                            ],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "声明异常入门": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "资源": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "利用反射分析类的能力": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "使用反射在运行时分析": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "使用反射编写泛型数组": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "访问字段": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "调用方法": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "调用构造方法": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "获取继承关系": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "动态代理": {
                      "node_id": "java-f7be740717c442c4a489a8c8d675f38c",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "空对象": {
                      "node_id": "java-dec42155c7904f7e9d00a37b5013470d",
                      "keywords": [],
                      "children": [
                        {
                          "模拟对象与桩": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-0109d4ae23934645bc817fd2ac423854",
                            "title": "模拟对象与桩"
                          }
                        }
                      ]
                    }
                  }
                ]
              }
            },
            {
              "容器深入研究": {
                "node_id": "java-ca51e8798bc84a47b13a58c8d734ac34",
                "keywords": [],
                "children": [
                  {
                    "完整的容器分类法": {
                      "node_id": "java-d29c64a86fbb49b88cc2eaa7b39375b4",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "填充容器": {
                      "node_id": "java-4d469275970748d68a5e3e51ba8728f4",
                      "keywords": [],
                      "children": [
                        {
                          "一种Generator解决方案": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-873bf34ed07045bba19f3535e4d866f6",
                            "title": "一种Generator解决方案"
                          }
                        },
                        {
                          "Map生成器": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "Map生成器"
                          }
                        },
                        {
                          "使用Abstract类": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "使用Abstract类"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "Collection的功能方法": {
                      "node_id": "java-e4ee5c02d364431f901c2851e2bebdc0",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "可选操作": {
                      "node_id": "java-62b6b4f057f549d5b3a4498ef6c7a7e8",
                      "keywords": [],
                      "children": [
                        {
                          "未获支持的操作": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-2031010f8362415e9db1c070711e5fd1",
                            "title": "未获支持的操作"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "List的功能方法": {
                      "node_id": "java-6a6a4fabc4e34b5d985e4787fda4793f",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "队列": {
                      "node_id": "java-3b1d3953fd724d1f87c1e95918bc2d0c",
                      "keywords": [],
                      "children": [
                        {
                          "优先级队列": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-ed2bb9f0663541629eccc6d1f8fa78fb",
                            "title": "优先级队列"
                          }
                        },
                        {
                          "双向队列": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "双向队列"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "理解Map": {
                      "node_id": "java-154f1448c9f04d7d950de1273760288f",
                      "keywords": [],
                      "children": [
                        {
                          "性能": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-8e3af4dbb58c4465921095cd49a8ebce",
                            "title": "性能"
                          }
                        },
                        {
                          "SortedMap": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "SortedMap"
                          }
                        },
                        {
                          "LinkedHashMap": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "LinkedHashMap"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "散列与散列码": {
                      "node_id": "java-10969a6ccab543558603a3c5d149cb1c",
                      "keywords": [],
                      "children": [
                        {
                          "理解hashCode（）": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-11f8416ef79f4128998d905e5c178b13",
                            "title": "理解hashCode（）"
                          }
                        },
                        {
                          "为速度而散列": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "为速度而散列"
                          }
                        },
                        {
                          "覆盖hashCode（）": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "覆盖hashCode（）"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "选择接口的不同实现": {
                      "node_id": "java-553c2f460603478f9d4047e1b4d78af1",
                      "keywords": [],
                      "children": [
                        {
                          "性能测试框架": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-6170302493d94af4a4a2377fb349b30a",
                            "title": "性能测试框架"
                          }
                        },
                        {
                          "对List的选择": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "对List的选择"
                          }
                        },
                        {
                          "微基准测试的危险": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "微基准测试的危险"
                          }
                        },
                        {
                          "对Set的选择": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "对Map的选择": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "实用方法": {
                      "node_id": "java-3805023f872947c4874b6e7bab06c1a7",
                      "keywords": [],
                      "children": [
                        {
                          "List的排序和查询": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-3bdeb8d490114bcd856b7da73e037dad",
                            "title": "List的排序和查询"
                          }
                        },
                        {
                          "设定Collection或Map为不可修改": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "设定Collection或Map为不可修改"
                          }
                        },
                        {
                          "Collection或Map的同步控制": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "Collection或Map的同步控制"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "持有引用": {
                      "node_id": "java-16f140529ddd4709a2bc538fd83d4324",
                      "keywords": [],
                      "children": [
                        {
                          "WeakHashMap": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-77540b2eae5f4d25834edcb16f1f22fc",
                            "title": "WeakHashMap"
                          }
                        }
                      ]
                    }
                  }
                ]
              }
            },
            {
              "新类库中的构件": {
                "node_id": "java-5a49d27c4caa4300936968edb642186c",
                "keywords": [],
                "children": [
                  {
                    "CountDownLatch": {
                      "node_id": "java-a5ad5ac879014d99b56546a687064de9",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "CyclicBarrier": {
                      "node_id": "java-626f8873229c4ebcbf9535893b3a2636",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "DelayQueue": {
                      "node_id": "java-d78ab239f1af4ea9a947bb073e25466f",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "PriorityBlockingQueue": {
                      "node_id": "java-ba4040d7af8d408aa6f26827ce977b93",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "ScheduledExecutor": {
                      "node_id": "java-7a2655c558a94868acfd5c47605c19df",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "Semaphore": {
                      "node_id": "java-c696f5c80c8f49eab7d45be97d02a9b4",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "Exchange": {
                      "node_id": "java-0b97e56a58b94d2da9dd53bb9b1baac6",
                      "keywords": [],
                      "children": []
                    }
                  }
                ]
              }
            },
            {
              "注解": {
                "node_id": "java-baada6303aca42f0b2f7882a3446fdf9",
                "keywords": [],
                "children": [
                  {
                    "基本语法": {
                      "node_id": "java-132c631a618e4828b4c69316d6163ec3",
                      "keywords": [],
                      "children": [
                        {
                          "定义注解": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-98201a6f1e8a445ea49972461f824686",
                            "title": "定义注解"
                          }
                        },
                        {
                          "元注解": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "元注解"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "编写注解处理器": {
                      "node_id": "java-7548e9cbfcef479dbc0cb18f95956ee5",
                      "keywords": [],
                      "children": [
                        {
                          "注解元素": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-8ab361278b074bf0885a40a5ba4ea4ff",
                            "title": "注解元素"
                          }
                        },
                        {
                          "缺省值限制": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "缺省值限制"
                          }
                        },
                        {
                          "生成外部文件": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "生成外部文件"
                          }
                        },
                        {
                          "注解不支持继承": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "实现处理器": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "使用apt处理注解": {
                      "node_id": "java-8b0806d4d89948598ac95e5c19b53298",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "将观察者模式用于apt": {
                      "node_id": "java-b351f154d1a94dc0ae830f51f5ac2320",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "基于注解的单元测试": {
                      "node_id": "java-352f523c7ad54583a0097cf171015d83",
                      "keywords": [],
                      "children": [
                        {
                          "将@Unit用于泛型": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-14e84a2913724dfc9e77bf2cd2dfc17c",
                            "title": "将@Unit用于泛型"
                          }
                        },
                        {
                          "不需要任何“套件”": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "不需要任何“套件”"
                          }
                        },
                        {
                          "实现@Unit": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "实现@Unit"
                          }
                        },
                        {
                          "移除测试代码": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "限定重写父类方法：@Override": {
                      "node_id": "java-2d843168cf7c4d45b9e10bef5dd38424",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "Java 9增强的@Deprecated": {
                      "node_id": "java-2c4700ed3f94441a89ae1ce9cefb2acc",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "抑制编译器警告：@SuppressWarnings": {
                      "node_id": "java-53d85a25b0254b2ab2912c3ef05f9b44",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "“堆污染”警告与Java 9增强的@SafeVarargs": {
                      "node_id": "java-13e41a9fcdc348b180c14ff7c50883f3",
                      "keywords": [],
                      "children": []
                    }
                  }
                ]
              }
            },
            {
              "并发": {
                "node_id": "java-4363917cb433456e9bc2f56ee7848da6",
                "keywords": [],
                "children": [
                  {
                    "并发的多面性": {
                      "node_id": "java-66090dfe673e48a5a14c6ee846c4fc97",
                      "keywords": [],
                      "children": [
                        {
                          "更快的执行": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-4f4e7e1bf6714da0a24705e5cb433e71",
                            "title": "更快的执行"
                          }
                        },
                        {
                          "改进代码设计": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "改进代码设计"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "基本的线程机制": {
                      "node_id": "java-16ccc9e637e9400ab649da79bbe22e25",
                      "keywords": [],
                      "children": [
                        {
                          "定义任务让步": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-9a5d3d5d6ff943dbbe1f001d65ca7a50",
                            "title": "定义任务让步"
                          }
                        },
                        {
                          "使用Executor": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "使用Executor"
                          }
                        },
                        {
                          "从任务产生返回值": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "从任务产生返回值"
                          }
                        },
                        {
                          "休眠": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "让步": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "编码的变体": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "术语": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "创建有响应的用户界面": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "共享受限资源": {
                      "node_id": "java-6e7432768c234cbaa669694251acac52",
                      "keywords": [],
                      "children": [
                        {
                          "不正确地访问资源": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-1ac871427e9748739a060ca17d8fbe20",
                            "title": "不正确地访问资源"
                          }
                        },
                        {
                          "解决共享资源竞争": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "解决共享资源竞争"
                          }
                        },
                        {
                          "原子性与易变性": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "原子性与易变性"
                          }
                        },
                        {
                          "原子类": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "临界资源": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "在其他对象上同步": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "线程局部存储": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "终结任务": {
                      "node_id": "java-b58000412ab6443f9d1f71f3bf277966",
                      "keywords": [],
                      "children": [
                        {
                          "装饰性花园": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-6448199d7be947909b5ad6250bc6ceb8",
                            "title": "装饰性花园"
                          }
                        },
                        {
                          "在阻塞时终结": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "在阻塞时终结"
                          }
                        },
                        {
                          "中断": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "中断"
                          }
                        },
                        {
                          "检查中断": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "线程之间的协作": {
                      "node_id": "java-5e82993df31e4989ac4b128c08cf0823",
                      "keywords": [],
                      "children": [
                        {
                          "wait（）与notifyAll（）": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-5c28af969c6b4771825c907aac1480b0",
                            "title": "wait（）与notifyAll（）"
                          }
                        },
                        {
                          "notify（）与notifyAll（）": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "notify（）与notifyAll（）"
                          }
                        },
                        {
                          "生产者与消费者": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "生产者与消费者"
                          }
                        },
                        {
                          "任务间使用管道进行输入输出": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "死锁": {
                      "node_id": "java-372114d043a04070ad690f2753b5083b",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "性能调优": {
                      "node_id": "java-0e0ab101570648dead835dc698d47c7f",
                      "keywords": [],
                      "children": [
                        {
                          "比较各类互斥技术": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-8f95f37458464024ac66735cc5a304fc",
                            "title": "比较各类互斥技术"
                          }
                        },
                        {
                          "免锁容器": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "免锁容器"
                          }
                        },
                        {
                          "乐观锁": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "乐观锁"
                          }
                        },
                        {
                          "ReadWriteLock": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "活动对象": {
                      "node_id": "java-c72cb5c7af514f55b17f95097ff8d0e8",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "进阶读物": {
                      "node_id": "java-ecfe181731634ff680628d9f34888c12",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "线程状态": {
                      "node_id": "java-7a4a0e08d7424b5896f2325f732bdeee",
                      "keywords": [],
                      "children": [
                        {
                          "新建线程": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-f1fece37484743eeab27863607dd9fde",
                            "title": "新建线程"
                          }
                        },
                        {
                          "可运行线程": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "可运行线程"
                          }
                        },
                        {
                          "阻塞和等待线程": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "阻塞和等待线程"
                          }
                        },
                        {
                          "终止线程": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "线程属性": {
                      "node_id": "java-785476f0c71e437cadeb502a74dd86ed",
                      "keywords": [],
                      "children": [
                        {
                          "中断线程": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-689a856b2abb4cbb93fe6252c2eab816",
                            "title": "中断线程"
                          }
                        },
                        {
                          "守护线程": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "守护线程"
                          }
                        },
                        {
                          "线程名": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "线程名"
                          }
                        },
                        {
                          "未捕获异常的处理器": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "线程安全的集合": {
                      "node_id": "java-aa0b95d8960b4d12a2c9d9e90894a793",
                      "keywords": [],
                      "children": [
                        {
                          "阻塞队列": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-cc7d9f6eee604e51ad6efead3710b3ab",
                            "title": "阻塞队列"
                          }
                        },
                        {
                          "映射条目的原子更新": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "映射条目的原子更新"
                          }
                        },
                        {
                          "对并发散列映射的批操作": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "对并发散列映射的批操作"
                          }
                        },
                        {
                          "并发集视图": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "写数组的拷贝": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "并行数组算法": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        },
                        {
                          "较早的线程安全集合": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "异步计算": {
                      "node_id": "java-bb0e1dac4dcd4d179e105e10e0817c31",
                      "keywords": [],
                      "children": [
                        {
                          "可完成Future": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-1b20487d8b774539a09a9a43d1028d9d",
                            "title": "可完成Future"
                          }
                        },
                        {
                          "组合可完成Future": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "组合可完成Future"
                          }
                        },
                        {
                          "用户界面回调中的长时间运行任务": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "用户界面回调中的长时间运行任务"
                          }
                        }
                      ]
                    }
                  }
                ]
              }
            },
            {
              "Maven基础": {
                "node_id": "java-a569056217524d5a8b6ed88fd678b73d",
                "keywords": [],
                "children": [
                  {
                    "Maven介绍": {
                      "node_id": "java-1fbf8f4636ed479aa87548441295c562",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "依赖管理": {
                      "node_id": "java-76e9c3885d4145368c052419f60ecdb5",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "构建流程": {
                      "node_id": "java-43be29e168624aff939849f39630bca6",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "使用插件": {
                      "node_id": "java-e8a67f0c34b04da294b1a349169402a7",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "模块管理": {
                      "node_id": "java-7b68f372c5e1489fa451ea520fef7d12",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "使用mvnw": {
                      "node_id": "java-bc7e72cfd9794593a8043aea050cb8ec",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "发布Artifact": {
                      "node_id": "java-333c0931793049eabb069ae08e5c92d9",
                      "keywords": [],
                      "children": []
                    }
                  }
                ]
              }
            }
          ]
        }
      },
      {
        "Java高阶": {
          "node_id": "java-f03087d9779b41a1acf435e3eb6e28f7",
          "keywords": [],
          "children": [
            {
              "行为抽象和Lambda": {
                "node_id": "java-401df00d53964647a4fa249007f30a8b",
                "keywords": [],
                "children": [
                  {
                    "流和行为抽象": {
                      "node_id": "java-fb711fb0dfbb40db974476ea2d9faf9d",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "Lambda表达式": {
                      "node_id": "java-a3b60740abe74bb8a6c16dec381d31c4",
                      "keywords": [
                        "lambda",
                        "高阶函数",
                        "方法引用",
                        "SAM",
                        "函数式接口"
                      ],
                      "children": []
                    }
                  },
                  {
                    "流": {
                      "node_id": "java-9f8b0da343fd415c9b29380647b0f1f8",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "收集器": {
                      "node_id": "java-0f1fc49b2e1c41368403ca2239810920",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "分组": {
                      "node_id": "java-bbff17faa9a04aebbe14c62caccc2309",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "分区": {
                      "node_id": "java-05498c81f6be42a2a44ddb4de0178420",
                      "keywords": [],
                      "children": []
                    }
                  }
                ]
              }
            },
            {
              "Optional": {
                "node_id": "java-c3a2ef586dd7449788102b631419992f",
                "keywords": [],
                "children": [
                  {
                    "Optional与Null": {
                      "node_id": "java-36a3b51a36624ee8930794d64da6b22a",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "一致性": {
                      "node_id": "java-6a0ad22b08cd4520b453904d832936ea",
                      "keywords": [],
                      "children": []
                    }
                  }
                ]
              }
            },
            {
              "Java模块系统": {
                "node_id": "java-81c079af472746fc838268974b43dc55",
                "keywords": [],
                "children": [
                  {
                    "exports子句": {
                      "node_id": "java-b705d45009d84a609f9d8dd33935db31",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "requires子句": {
                      "node_id": "java-6aca051fce684c6c838c281e1e35b0fc",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "命名": {
                      "node_id": "java-300060ee7a04460685a0f3a359555ad1",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "requires": {
                      "node_id": "java-ad66a2df96f248539164e359391e6e63",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "exports": {
                      "node_id": "java-46cbc0a256454505906afa98f3052cbb",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "requires的传递": {
                      "node_id": "java-bf2afd6975e6426884923be9ab6c5083",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "exports to": {
                      "node_id": "java-c96aa563cbc84d5eaad4dbe8f025eaf4",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "open和opens": {
                      "node_id": "java-9b28ed31512b49e7ad8fb99a3345a678",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "uses和provides": {
                      "node_id": "java-fb13f5492e4e4eed9d83aca71bd9a9c4",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "多模块项目": {
                      "node_id": "java-da75bc8b6b0d471184961e44a5e4025f",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "编译及打包": {
                      "node_id": "java-02891816ef1e4421abda7f2e2fa300ba",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "自动模块": {
                      "node_id": "java-7a6f0097d06c47f180e1d8ede54722e7",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "模块声明及子句": {
                      "node_id": "java-91dc218d58244a70bbc610043cf8a597",
                      "keywords": [],
                      "children": []
                    }
                  }
                ]
              }
            },
            {
              "Java异步任务": {
                "node_id": "java-267da81d131440de883b62376f5fc38b",
                "keywords": [],
                "children": [
                  {
                    "为支持并发而不断演进的Java": {
                      "node_id": "java-889e8043d080406fa4f505990615a20c",
                      "keywords": [],
                      "children": [
                        {
                          "其他的线程抽象：非嵌套方法调用": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-b0623f5f2fd04678aa56901d2eee493b",
                            "title": "其他的线程抽象：非嵌套方法调用"
                          }
                        },
                        {
                          "你希望线程为你带来什么": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "你希望线程为你带来什么"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "同步及异步API": {
                      "node_id": "java-ea102b3f32754119b4d16bcce54743b2",
                      "keywords": [],
                      "children": [
                        {
                          "Future风格的API": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-2311732fd9034ba68ae16842da51192e",
                            "title": "Future风格的API"
                          }
                        },
                        {
                          "反应式风格的API": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "反应式风格的API"
                          }
                        },
                        {
                          "有害的睡眠及其他阻塞式操作": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "有害的睡眠及其他阻塞式操作"
                          }
                        },
                        {
                          "如何使用异步API进行异常处理": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "“线框–管道”模型": {
                      "node_id": "java-16a45f5c4e8242519004fe429dd335c9",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "为并发而生的CompletableFuture和结合器": {
                      "node_id": "java-90f4b7c696464886af9c8de8cbd95338",
                      "keywords": [],
                      "children": []
                    }
                  },
                  {
                    "“发布–订阅”以及反应式编程": {
                      "node_id": "java-af9fa0cd03d643fdb6eecd75272140cf",
                      "keywords": [],
                      "children": [
                        {
                          "背压": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-bb8cf6772cb340c1adb74e9b231357a8",
                            "title": "背压"
                          }
                        },
                        {
                          "一种简单的真实背压": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "一种简单的真实背压"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "反应式系统和反应式编程": {
                      "node_id": "java-d720f1f3560343559bcc30eca566d317",
                      "keywords": [],
                      "children": []
                    }
                  }
                ]
              }
            },
            {
              "反应式编程": {
                "node_id": "java-0969aecf77a7416ba0fed596b2569a23",
                "keywords": [],
                "children": [
                  {
                    "反应式流以及Flow API": {
                      "node_id": "java-96551e0eb6b044ff8f7fe9b5ff27fd73",
                      "keywords": [],
                      "children": [
                        {
                          "Flow类": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-35293e7729734213bcd67b97853eb50b",
                            "title": "Flow类"
                          }
                        },
                        {
                          "创建你的第一个反应式应用": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "创建你的第一个反应式应用"
                          }
                        },
                        {
                          "使用Processor转换数据": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "使用Processor转换数据"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "使用反应式库RxJava": {
                      "node_id": "java-bf773ed23aad4739866b582a3679e381",
                      "keywords": [],
                      "children": [
                        {
                          "转换及整合多个Observable": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-5a62f6f76fc04129aa628b3bd0f22609",
                            "title": "转换及整合多个Observable"
                          }
                        }
                      ]
                    }
                  },
                  {
                    "Java反射技术": {
                      "node_id": "java-313674f323ec43919376c21a7e1bc88b",
                      "keywords": [],
                      "children": [
                        {
                          "通过反射构建对象": {
                            "keywords": [],
                            "children": [],
                            "node_id": "java-ac54833922254dceaccce5a2ffb0bf08",
                            "title": "通过反射构建对象"
                          }
                        },
                        {
                          "反射方法": {
                            "keywords": [],
                            "children": [],
                            "node_id": "569d5e11c4fc5de7844053d9a733c5e8",
                            "title": "反射方法"
                          }
                        }
                      ]
                    }
                  }
                ]
              }
            },
            {
              "Apache Common": {
                "node_id": "java-e5d307b8ce2049648b4afd9fecdb48b0",
                "keywords": [],
                "children": []
              }
            }
          ]
        }
      }
    ]
  }
}