JAVA并发，后台线程

package com.xt.thinks21_2;

import java.util.concurrent.TimeUnit;

/**
 * 后台线程测试
 * 
 * @author Administrator
 *
 */
public class SimpleDaemonTest implements Runnable {

    @Override
    public void run() {
        // TODO Auto-generated method stub
        while (true) {
            try {
                TimeUnit.MILLISECONDS.sleep(100);
                System.out.println(Thread.currentThread() + ":" + this);
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }

    public static void main(String[] args) {
        for (int i = 0; i < 10; i++) {
            Thread t = new Thread(new SimpleDaemonTest());
            t.setDaemon(true);// 设置为后台线程，如果不设置则为非后台线程，会无线打印线程信息
            t.start();
        }
        System.out.println("ALL DEAMON IS START!");
        try {
            TimeUnit.MILLISECONDS.sleep(175);// 175>100，所有每个线程信息打印一次
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

}

后台线程与非后台线程的方法区别:后台线程会主动设置Thread.setDeamon(true)

当非后台线程结束时，后台线程强制结束