指定线程加入当前线程

package com.hfxt.p3;

public class MyThread extends Thread {

	public void run(){
		for(int i=1;i<=5;i++){
			//this.getName显示线程名
			System.out.println(this.getName()+":"+i);
		}
	}
}
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package com.hfxt.p3;
//线程测试
public class ThreadTest {

	public static void main(String[] args) {
		for(int i=1;i<=10;i++){
			if(i==5){
				MyThread mt = new MyThread();
				mt.start();
				try {
					//阻塞线程(当i=5时候，阻塞线程)
					mt.join();
				} catch (InterruptedException e) {
					e.printStackTrace();
				}
			}
			//Thread.currentThread()返回线程对象
			System.out.println(Thread.currentThread().getName()+":"+i);
		}
	}
}