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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