awaitTermination() shutdown()

newFixedThreadPool

创建一个固定大小的线程池。

shutdown()：用于关闭启动线程，如果不调用该语句，jvm不会关闭。

awaitTermination()：用于等待子线程结束，再继续执行下面的代码。该例中我设置一直等着子线程结束。

 

 

Java代码  

1. public class Test {   
2.   
3.     public static void main(String[] args) throws IOException, InterruptedException {   
4.         ExecutorService service = Executors.newFixedThreadPool(2);   
5.         for (int i = 0; i < 4; i++) {   
6.             Runnable run = new Runnable() {   
7.                 @Override  
8.                 public void run() {   
9.                     System.out.println("thread start");   
10.                 }   
11.             };   
12.             service.execute(run);   
13.         }   
14.         service.shutdown();   
15.         service.awaitTermination(Long.MAX_VALUE, TimeUnit.DAYS);   
16.         System.out.println("all thread complete");   
17.     }   
18. }  

public class Test {public static void main(String[] args) throws IOException, InterruptedException {ExecutorService service = Executors.newFixedThreadPool(2);for (int i = 0; i < 4; i++) {Runnable run = new Runnable() {@Overridepublic void run() {System.out.println("thread start");}};service.execute(run);}service.shutdown();service.awaitTermination(Long.MAX_VALUE, TimeUnit.DAYS);System.out.println("all thread complete");}}

 

 

 

 输出：

thread start
thread start
thread start
thread start
all thread complete