diff --git "a/data/1.Java\345\210\235\351\230\266/11.IO\345\210\235\346\255\245/1.\345\255\227\350\212\202\346\265\201/bytestream.md" "b/data/1.Java\345\210\235\351\230\266/11.IO\345\210\235\346\255\245/1.\345\255\227\350\212\202\346\265\201/bytestream.md"
index b4bcf95bf6d3b47994194ec9c67b49aec850ca23..8ecb219a423b7fd13029c3a69311b6ca7079bd5d 100644
--- "a/data/1.Java\345\210\235\351\230\266/11.IO\345\210\235\346\255\245/1.\345\255\227\350\212\202\346\265\201/bytestream.md"
+++ "b/data/1.Java\345\210\235\351\230\266/11.IO\345\210\235\346\255\245/1.\345\255\227\350\212\202\346\265\201/bytestream.md"
@@ -4,7 +4,7 @@
 
 ## 答案
 
-D
+所有都是
 
 ## 选项
 
@@ -19,7 +19,3 @@ FileInputStream
 ### C
 
 BufferedInputStream
-
-### D
-
-以上都是
diff --git "a/data/1.Java\345\210\235\351\230\266/11.IO\345\210\235\346\255\245/2.File\347\261\273/file.md" "b/data/1.Java\345\210\235\351\230\266/11.IO\345\210\235\346\255\245/2.File\347\261\273/file.md"
index 74dd5883cdd87cb0945fdcdfee0612f3e42e982e..e23c9fed381fbb571fb5d1e3805d924a27d5031b 100644
--- "a/data/1.Java\345\210\235\351\230\266/11.IO\345\210\235\346\255\245/2.File\347\261\273/file.md"
+++ "b/data/1.Java\345\210\235\351\230\266/11.IO\345\210\235\346\255\245/2.File\347\261\273/file.md"
@@ -44,4 +44,4 @@ try{
 
 ### D
 
-以上都是
+所有例子都是错的
diff --git "a/data/1.Java\345\210\235\351\230\266/7.\351\233\206\345\220\210/12.\351\201\227\347\225\231\347\232\204\351\233\206\345\220\210/legacy.md" "b/data/1.Java\345\210\235\351\230\266/7.\351\233\206\345\220\210/12.\351\201\227\347\225\231\347\232\204\351\233\206\345\220\210/legacy.md"
index 4a1de009ef799595f2cbe008be935318f57cd713..041552cca3a6b98e208be6eda9615eb3d2bb6b67 100644
--- "a/data/1.Java\345\210\235\351\230\266/7.\351\233\206\345\220\210/12.\351\201\227\347\225\231\347\232\204\351\233\206\345\220\210/legacy.md"
+++ "b/data/1.Java\345\210\235\351\230\266/7.\351\233\206\345\220\210/12.\351\201\227\347\225\231\347\232\204\351\233\206\345\220\210/legacy.md"
@@ -1,10 +1,10 @@
 # 遗留的集合
 
-下面哪些是遗留的集合：
+Java 标准库中有一些类型，已经不再推荐使用，仅因为兼容旧代码才保留下来。下面哪些是遗留的集合：
 
 ## 答案
 
-以上都是
+所有都是
 
 ## 选项
 
diff --git "a/data/1.Java\345\210\235\351\230\266/7.\351\233\206\345\220\210/14.\344\275\277\347\224\250TreeMap/treemap.md" "b/data/1.Java\345\210\235\351\230\266/7.\351\233\206\345\220\210/14.\344\275\277\347\224\250TreeMap/treemap.md"
index 28261627d419cd9fd3ae69c4e1670575697fcabc..685eec0f7617d20ba9de3a462e3d5e7820219155 100644
--- "a/data/1.Java\345\210\235\351\230\266/7.\351\233\206\345\220\210/14.\344\275\277\347\224\250TreeMap/treemap.md"
+++ "b/data/1.Java\345\210\235\351\230\266/7.\351\233\206\345\220\210/14.\344\275\277\347\224\250TreeMap/treemap.md"
@@ -4,7 +4,7 @@
 
 ## 答案
 
-ATreeMap继承于AbstractMap，实现了Map, Cloneable, NavigableMap, Serializable接口
+TreeMap继承于AbstractMap，实现了Map, Cloneable, NavigableMap, Serializable接口
 
 ## 选项
 
diff --git "a/data/3.Java\351\253\230\351\230\266/4.\350\277\233\351\230\266\344\273\273\345\212\241/1.Java\351\227\256\347\255\224/qa.json" "b/data/3.Java\351\253\230\351\230\266/4.\350\277\233\351\230\266\344\273\273\345\212\241/1.Java\351\227\256\347\255\224/qa.json"
index 5c269b6f1282836c298197248b75ff06594a8d3d..05d071e29e6fe06296ca69e80baefb2a3e5abc0b 100644
--- "a/data/3.Java\351\253\230\351\230\266/4.\350\277\233\351\230\266\344\273\273\345\212\241/1.Java\351\227\256\347\255\224/qa.json"
+++ "b/data/3.Java\351\253\230\351\230\266/4.\350\277\233\351\230\266\344\273\273\345\212\241/1.Java\351\227\256\347\255\224/qa.json"
@@ -4,7 +4,7 @@
   "depends": [],
   "type": "qa_task",
   "task_link": "https://ask.csdn.net/channel/7/tag/13",
-  "task_info":{
+  "task_info": {
     "tag_name": "java"
   },
   "notebook_enable": false,
diff --git a/data/tree.json b/data/tree.json
index 8c3612aec341cb9d916e5c3a3d7db155b8d4a656..a3cbe72de639e957426a3124afd84f88ba1664c8 100644
--- a/data/tree.json
+++ b/data/tree.json
@@ -28,8 +28,7 @@
                           "源代码"
                         ]
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -43,8 +42,7 @@
                       "keywords_must": [
                         "编译"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -58,8 +56,7 @@
                       "keywords_must": [
                         "运行机制"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -73,8 +70,7 @@
                         "CLASSPATH",
                         "JAVAHOME"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -88,14 +84,12 @@
                       "keywords_must": [
                         "maven"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": [],
-                "group": 0
+                "keywords_forbid": []
               }
             },
             {
@@ -114,8 +108,7 @@
                       "keywords_must": [
                         "语法格式"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -128,8 +121,7 @@
                       "keywords_must": [
                         "注释"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -143,14 +135,12 @@
                       "keywords_must": [
                         "关键字"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": [],
-                "group": 0
+                "keywords_forbid": []
               }
             },
             {
@@ -171,8 +161,7 @@
                         "变量的定义",
                         "变量定义"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -186,8 +175,7 @@
                       "keywords_must": [
                         "数据类型"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -203,8 +191,7 @@
                       "keywords_must": [
                         "常量"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -219,14 +206,12 @@
                       "keywords_must": [
                         "作用域"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": [],
-                "group": 0
+                "keywords_forbid": []
               }
             },
             {
@@ -253,8 +238,7 @@
                         "不等于",
                         "比较运算符"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -269,8 +253,7 @@
                       "keywords_must": [
                         "逻辑运算符"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -284,14 +267,12 @@
                       "keywords_must": [
                         "算术运算符"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": [],
-                "group": 0
+                "keywords_forbid": []
               }
             },
             {
@@ -314,8 +295,7 @@
                         "if语句",
                         "if"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -331,14 +311,12 @@
                       "keywords_must": [
                         "switch"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": [],
-                "group": 0
+                "keywords_forbid": []
               }
             },
             {
@@ -360,8 +338,7 @@
                         "do",
                         "while"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -375,14 +352,12 @@
                       "keywords_must": [
                         "for"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": [],
-                "group": 0
+                "keywords_forbid": []
               }
             },
             {
@@ -402,8 +377,7 @@
                         "Collection接口",
                         "collection"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -451,8 +425,7 @@
                         "列表",
                         "List接口"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -489,8 +462,7 @@
                         "遍历",
                         "迭代"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -536,8 +508,7 @@
                         "set",
                         "集合"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -583,8 +554,7 @@
                         "Map接口",
                         "map"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -619,8 +589,7 @@
                       "keywords_must": [
                         "集合框架"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -634,8 +603,7 @@
                       "keywords_must": [
                         "链表"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -650,8 +618,7 @@
                         "数组列表",
                         "ArrayList"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -666,8 +633,7 @@
                         "散列集",
                         "HashSet"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -682,8 +648,7 @@
                         "树集",
                         "treeset"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -727,8 +692,7 @@
                       "keywords_must": [
                         "映射"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -773,8 +737,7 @@
                       "keywords_must": [
                         "遗留的集合"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -790,8 +753,7 @@
                         "equals",
                         "hashCode"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -806,8 +768,7 @@
                       "keywords_must": [
                         "TreeMap"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -823,8 +784,7 @@
                         "属性",
                         "Properties"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -839,14 +799,12 @@
                         "Deque",
                         "双端队列"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": [],
-                "group": 0
+                "keywords_forbid": []
               }
             },
             {
@@ -875,8 +833,7 @@
                       "keywords_must": [
                         "算术操作符"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -891,8 +848,7 @@
                         "自动递增",
                         "自动递减"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -917,8 +873,7 @@
                         "关系运算符",
                         "关系操作符"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -946,8 +901,7 @@
                         "逻辑操作符",
                         "逻辑运算符"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -965,8 +919,7 @@
                         "bit",
                         "比特"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -984,8 +937,7 @@
                         "左移",
                         "右移"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1000,8 +952,7 @@
                         "三元操作符",
                         "三元运算符"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1015,14 +966,12 @@
                         "字符串操作符",
                         "字符串运算符"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": [],
-                "group": 0
+                "keywords_forbid": []
               }
             },
             {
@@ -1043,8 +992,7 @@
                         "if",
                         "else"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1062,8 +1010,7 @@
                         "for循环",
                         "foreach"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1077,8 +1024,7 @@
                       "keywords_must": [
                         "switch"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1127,8 +1073,7 @@
                         "catch",
                         "finally"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1143,14 +1088,12 @@
                         "函数",
                         "function"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": [],
-                "group": 0
+                "keywords_forbid": []
               }
             },
             {
@@ -1172,8 +1115,7 @@
                         "类",
                         "面向对象"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1188,8 +1130,7 @@
                       "keywords_must": [
                         "抽象类"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1204,8 +1145,7 @@
                       "keywords_must": [
                         "接口"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1220,14 +1160,12 @@
                       "keywords_must": [
                         "匿名类"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": [],
-                "group": 0
+                "keywords_forbid": []
               }
             },
             {
@@ -1246,8 +1184,7 @@
                       "keywords_must": [
                         "字节流"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1262,20 +1199,17 @@
                       "keywords_must": [
                         "File"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": [],
-                "group": 0
+                "keywords_forbid": []
               }
             }
           ],
           "keywords_must": [],
-          "keywords_forbid": [],
-          "group": 0
+          "keywords_forbid": []
         }
       },
       {
@@ -1302,8 +1236,7 @@
                         "流概述",
                         "stream"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1320,8 +1253,7 @@
                         "随机访问文件",
                         "RandomAccessFile"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1361,8 +1293,7 @@
                         "输入流",
                         "输出流"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1407,8 +1338,7 @@
                         "reader",
                         "writer"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1425,8 +1355,7 @@
                         "serialize",
                         "serializable"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1467,8 +1396,7 @@
                       "keywords_must": [
                         "ZIP压缩"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1484,8 +1412,7 @@
                       "keywords_must": [
                         "InputStream"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1501,14 +1428,12 @@
                       "keywords_must": [
                         "OutputStream"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": [],
-                "group": 0
+                "keywords_forbid": []
               }
             },
             {
@@ -1529,8 +1454,7 @@
                       "keywords_must": [
                         "JDBC概述"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1589,14 +1513,12 @@
                       "keywords_must": [
                         "数据库"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": [],
-                "group": 0
+                "keywords_forbid": []
               }
             },
             {
@@ -1614,8 +1536,7 @@
                       "keywords_must": [
                         "nio"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1630,8 +1551,7 @@
                         "buffer",
                         "缓冲器"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1646,8 +1566,7 @@
                         "channel",
                         "通道"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1662,8 +1581,7 @@
                         "字符集",
                         "charset"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1680,8 +1598,7 @@
                         "文件锁",
                         "lock"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1696,8 +1613,7 @@
                       "keywords_must": [
                         "Path接口"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1711,14 +1627,12 @@
                       "keywords_must": [
                         "Files"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": [],
-                "group": 0
+                "keywords_forbid": []
               }
             },
             {
@@ -1768,8 +1682,7 @@
                       "keywords_must": [
                         "网络编程"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1804,8 +1717,7 @@
                       "keywords_must": [
                         "udp"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1850,8 +1762,7 @@
                       "keywords_must": [
                         "tcp"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1885,8 +1796,7 @@
                       "keywords_must": [
                         "基本网络支持"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1921,8 +1831,7 @@
                       "keywords_must": [
                         "代理服务器"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -1970,14 +1879,12 @@
                       "keywords_must": [
                         "HTTP Client"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": [],
-                "group": 0
+                "keywords_forbid": []
               }
             },
             {
@@ -2028,8 +1935,7 @@
                       "keywords_must": [
                         "Class对象"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -2074,8 +1980,7 @@
                       "keywords_must": [
                         "类型转换"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -2089,8 +1994,7 @@
                         "instanceof",
                         "等价性"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -2115,8 +2019,7 @@
                         "反射",
                         "运行时类信息"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -2129,8 +2032,7 @@
                       "keywords_must": [
                         "动态代理"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -2154,14 +2056,12 @@
                       "keywords_must": [
                         "空对象"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": [],
-                "group": 0
+                "keywords_forbid": []
               }
             },
             {
@@ -2182,8 +2082,7 @@
                         "功能",
                         "方法"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -2198,8 +2097,7 @@
                         "功能",
                         "方法"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -2213,8 +2111,7 @@
                       "keywords_must": [
                         "存储顺序"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -2251,8 +2148,7 @@
                         "队列",
                         "queue"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -2299,8 +2195,7 @@
                         "map",
                         "字典"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -2342,8 +2237,7 @@
                       "keywords_must": [
                         "选择接口"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -2367,14 +2261,12 @@
                       "keywords_must": [
                         "Collections"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": [],
-                "group": 0
+                "keywords_forbid": []
               }
             },
             {
@@ -2414,8 +2306,7 @@
                       "keywords_must": [
                         "注解"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -2430,8 +2321,7 @@
                       "keywords_must": [
                         "apt"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -2449,14 +2339,12 @@
                         "单元测试",
                         "annotation"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": [],
-                "group": 0
+                "keywords_forbid": []
               }
             },
             {
@@ -2495,8 +2383,7 @@
                       "keywords_must": [
                         "并发"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -2542,8 +2429,7 @@
                       "keywords_must": [
                         "线程属性"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -2579,8 +2465,7 @@
                       "keywords_must": [
                         "线程状态"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -2627,8 +2512,7 @@
                         "线程之间的协作",
                         "线程协作"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -2645,8 +2529,7 @@
                       "keywords_must": [
                         "死锁"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -2694,20 +2577,17 @@
                         "线程安全的集合",
                         "线程安全集合"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": [],
-                "group": 0
+                "keywords_forbid": []
               }
             }
           ],
           "keywords_must": [],
-          "keywords_forbid": [],
-          "group": 0
+          "keywords_forbid": []
         }
       },
       {
@@ -2731,8 +2611,7 @@
                       "keywords_must": [
                         "行为抽象"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -2749,8 +2628,7 @@
                       "keywords_must": [
                         "lambda"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -2765,8 +2643,7 @@
                         "流",
                         "stream"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -2781,8 +2658,7 @@
                       "keywords_must": [
                         "收集器"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -2798,8 +2674,7 @@
                         "分组",
                         "group by"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -2815,14 +2690,12 @@
                         "分区",
                         "partition by"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": [],
-                "group": 0
+                "keywords_forbid": []
               }
             },
             {
@@ -2842,8 +2715,7 @@
                         "optional",
                         "null"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -2858,14 +2730,12 @@
                         "optional",
                         "一致性"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": [],
-                "group": 0
+                "keywords_forbid": []
               }
             },
             {
@@ -2888,8 +2758,7 @@
                         "线程",
                         "thread"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   },
                   {
@@ -2906,14 +2775,12 @@
                         "异步",
                         "future"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": [],
-                "group": 0
+                "keywords_forbid": []
               }
             },
             {
@@ -2931,25 +2798,21 @@
                       "keywords_must": [
                         "Java问答"
                       ],
-                      "keywords_forbid": [],
-                      "group": 0
+                      "keywords_forbid": []
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": [],
-                "group": 0
+                "keywords_forbid": []
               }
             }
           ],
           "keywords_must": [],
-          "keywords_forbid": [],
-          "group": 0
+          "keywords_forbid": []
         }
       }
     ],
     "keywords_must": [],
-    "keywords_forbid": [],
-    "group": 0
+    "keywords_forbid": []
   }
 }
\ No newline at end of file