1 package com.future;
2
3 import java.util.concurrent.*;
4
5
6 public class FDemo {
7 public static final ExecutorService service = Executors.newSingleThreadExecutor();
8 public static final ExecutorService service1 = Executors.newSingleThreadExecutor();
9 public static final ExecutorService threadPoolExecutor = new ThreadPoolExecutor(4, 10, 60, TimeUnit.MILLISECONDS, new LinkedBlockingQueue(5));
10
11 public static void main(String[] args) throws InterruptedException, ExecutionException, TimeoutException {
12 Future<Boolean> booleanTask = threadPoolExecutor.submit(() -> {
13 Thread.sleep(3000);
14 return true;
15 });
16 System.out.println("11111111111");
17 // 任务2
18 Future<String> stringTask = threadPoolExecutor.submit(() -> {
19 Thread.sleep(4000);
20 return "Hello World";
21 });
22 //当get的时候开始计算超时，如果不需要考虑超时，可以使用
23 //!booleanTask.isCancelled()&&booleanTask.isDone()来获取值
24 Boolean result1 = booleanTask.get(3, TimeUnit.SECONDS);
25 System.err.println("任务1-10s： " + result1);
26
27 //当过去3秒才会执行到这里，stringTask延迟4秒，即只要允许超过1秒可以获取消息就行，而这里是允许3秒后才获取结果
28 String result = stringTask.get(3, TimeUnit.SECONDS);
29 System.err.println("任务2-3s： " + result);
30
31
32 }
33
34
35 }
