join

1. /**
2.  * @(#)TestJoin.java
3.  *
4.  *
5.  * @author 
6.  * @version 1.00 2008/10/10
7.  */
10. public class TestJoin {
12.     public TestJoin() {
13.     }
14.     
15.     
16.     public static void main(String []args)
17.     {
18.         MyThread t1=new MyThread("thread1");
19.         MyThread t2=new MyThread("thread2");
20.         t1.start();t2.start();
21.         try
22.         {
23.             t1.join();//把t1加入主线程中，所以main一定出现在thread1之后
24.             
25.         }catch(InterruptedException e){}
26.         for(int i=0; i<10; i++)
27.         {
28.         //  if(i==5)
29.             //  t2.interrupt();
30.     
31.         System.out.println("main");
32.             }  
33.     }
34. }
35. class MyThread extends Thread
36. {
37.     MyThread(String s)
38.     {
39.         super(s);
40.     }
41.     public void run()
42.     {
43.         for( int i=1; i<=100; i++)
44.             System.out.println(getName());
45.             try
46.             {
47.                 sleep(1000);
48.             }catch(InterruptedException e)
49.             {
50.                 return ;
51.             }
52.     }
53. }

output:

thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2

thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread2
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
thread1
main
main
main
main
main
main
main
main
main
main