Java多线程之ThreadGroupDemo

package com.ccy.thread.demo;

import org.junit.Test;

public class ThreadGroupDemo {
	
	@Test
	public void test(){
		ThreadGroup group = new ThreadGroup("test");
		
		new Thread(group,new MyThead()).start();
		new Thread(group,new MyThead()).start();
		new Thread(group,new MyThead()).start();
		//打印出该线程组的信息
		group.list();
		//该线程组的活动线程 结果为 ：3
		System.out.println(group.activeCount());
		//父线程组  结果为：main(主线程)
		System.out.println(group.getParent().getName());
		
	}
}


class MyThead implements Runnable{
	@Override
	public void run() {
		for(int i =0;i<Integer.MAX_VALUE;i++){
			System.out.println(Thread.currentThread().getName()+"输出:"+i);
		}
	}
	
}

 

 

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