线程随笔-测试join

package test.Thread;

import java.util.Date;

public class testJoin {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Runner4 r4 = new Runner4();
		Thread t1 = new Thread(r4);
		t1.start();
		try {
			t1.join();
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			// e.printStackTrace();
		}
		for (int i = 1; i < 5; i++) {
			System.out.println("this is main thread");
		}
	}
}

class Runner4 implements Runnable {

	public void run() {
		// TODO Auto-generated method stub
		for (int i = 1; i < 5; i++) {
			System.out.println("this is runner4 " + new Date());
			try {
				Thread.sleep(1000);
			} catch (InterruptedException e) {
				// TODO Auto-generated catch block
				// e.printStackTrace();
				System.out.println("rnuuer4 is interrupted");
				return;
			}
		}
	}
}
 

 

the result of not use join

 

this is main thread
this is main thread
this is main thread
this is main thread
this is runner4 Fri Sep 05 21:40:22 CST 2008
this is runner4 Fri Sep 05 21:40:23 CST 2008
this is runner4 Fri Sep 05 21:40:24 CST 2008
this is runner4 Fri Sep 05 21:40:25 CST 2008

 

the result of use join

 

this is runner4 Fri Sep 05 21:46:23 CST 2008
this is runner4 Fri Sep 05 21:46:24 CST 2008
this is runner4 Fri Sep 05 21:46:25 CST 2008
this is runner4 Fri Sep 05 21:46:26 CST 2008
this is main thread
this is main thread
this is main thread
this is main thread