reflection for orders

data/2.Java中阶/9.新类库中的构件/ScheduledExecutor.json

-{
-    "type": "code_options",
-    "author": "clong",
-    "source": "ScheduledExecutor.md",
-    "exercise_id": "",
-    "notebook_enable": true
-}
\ No newline at end of file

data/2.Java中阶/9.新类库中的构件/ScheduledExecutor.md

-# ScheduledExecutor
-
-
-项目中经常与遇到定时执行任务的情况，可以使用 `ScheduledExecutor` 来实现，以下代码运行后制台输出正确的是：
-
-```java
-import java.util.concurrent.ScheduledThreadPoolExecutor;
-import java.util.concurrent.TimeUnit;
-
-class Task implements Runnable {
-
-    private String name;
-
-    public Task(String name) {
-        this.name = name;
-    }
-
-    @Override
-    public void run() {
-        System.out.println(name);
-    }
-}
-
-public class ScheduledExecutorTest {
-    public static void main(String[] args) {
-        ScheduledThreadPoolExecutor schedule = new ScheduledThreadPoolExecutor(10);
-        for (int i = 5; i > 0; i--) {
-            Task worker = new Task("task-" + i);
-            schedule.schedule(worker, i*2, TimeUnit.SECONDS);
-        }
-    }
-}
-```
-
-
-## 答案
-
-```
-task-1
-task-2
-task-3
-task-4
-task-5
-```
-
-## 选项
-
-### A
-
-```
-task-5
-task-4
-task-3
-task-2
-task-1
-```
-
-### B
-
-```
-task-5
-task-4
-task-1
-task-2
-task-3
-```
-
-### C
-
-```
-task-1
-task-2
-task-3
-task-5
-task-4
-```

data/2.Java中阶/9.新类库中的构件/config.json

-{
-  "node_id": "java-5a49d27c4caa4300936968edb642186c",
-  "keywords": ["CountDownLatch", "CyclicBarrier", "DelayQueue", "PriorityBlockingQueue", "ScheduledExecutor", "Semaphore", "Exchanger"],
-  "children": [
-    {
-      "CountDownLatch": {
-        "keywords": [],
-        "children": [],
-        "node_id": "java-9a7cb3066def45889807e133e5eb7736",
-        "title": "CountDownLatch"
-      }
-    },
-    {
-      "CyclicBarrier": {
-        "keywords": [],
-        "children": [],
-        "node_id": "java-626f8873229c4ebcbf9535893b3a2636",
-        "title": "CyclicBarrier"
-      }
-    },
-    {
-      "DelayQueue": {
-        "keywords": [],
-        "children": [],
-        "node_id": "java-d78ab239f1af4ea9a947bb073e25466f",
-        "title": "DelayQueue"
-      }
-    },
-    {
-      "PriorityBlockingQueue": {
-        "keywords": [],
-        "children": [],
-        "node_id": "java-ba4040d7af8d408aa6f26827ce977b93",
-        "title": "PriorityBlockingQueue"
-      }
-    },
-    {
-      "ScheduledExecutor": {
-        "keywords": [],
-        "children": [],
-        "node_id": "java-7a2655c558a94868acfd5c47605c19df",
-        "title": "ScheduledExecutor"
-      }
-    },
-    {
-      "Semaphore": {
-        "keywords": [],
-        "children": [],
-        "node_id": "java-c696f5c80c8f49eab7d45be97d02a9b4",
-        "title": "Semaphore"
-      }
-    },
-    {
-      "Exchanger": {
-        "keywords": [],
-        "children": [],
-        "node_id": "java-0b97e56a58b94d2da9dd53bb9b1baac6",
-        "title": "Exchanger"
-      }
-    }
-  ],
-  "export": ["ScheduledExecutorTest.json"],
-  "title": "新类库中的构件"
-}
\ No newline at end of file

data/tree.json

@@ -3760,21 +3760,6 @@
                 ]
               }
             },
-            {
-              "新类库中的构件": {
-                "node_id": "java-5a49d27c4caa4300936968edb642186c",
-                "keywords": [
-                  "CountDownLatch",
-                  "CyclicBarrier",
-                  "DelayQueue",
-                  "PriorityBlockingQueue",
-                  "ScheduledExecutor",
-                  "Semaphore",
-                  "Exchanger"
-                ],
-                "children": []
-              }
-            },
             {
               "注解": {
                 "node_id": "java-baada6303aca42f0b2f7882a3446fdf9",