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);}}}--------------------------------------------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);}}}