join

参考： http://www.cnblogs.com/skywang12345/p/3479275.html

package test.joinTest;
public class JoinTest {
     public static void main(String[] args) {
          try {
              ThreadA t1=new ThreadA("t1");
              t1.start();
              t1.join();
              System.out.println(Thread.currentThread().getName()+"  finish");
              
          } catch (Exception e) {
              System.out.println(e);
          }
     }
     static class ThreadA extends Thread{
          public ThreadA(String name){
              super(name);
          }
          public void run(){
              System.out.println(this.getName()+"  start");
              for(int i=0;i<1000000;i++);
              System.out.println(this.getName()+"  finish");
          }
     }
}
t1 start
t1 finish
main finish