守护线程

Thread t = new Thread();
t.setDaemon(true);
t.start();

package com.zhaijiayu;

public class Main {
    public static void main(String[] args) throws InterruptedException {
        Thread t = new Thread1();
//        t.setDaemon(true);//设置为守护线程
        t.start();
        System.out.println("main: wait 3 sec...");
        try{
            Thread.sleep(3000);
        }catch (InterruptedException e){

        }
        System.out.println("end");
    }
}

class Thread1 extends Thread{
    @Override
    public void run() {
        for(;;){
            System.out.println("Thread-1: running...");
            try{
                Thread.sleep(500);
            }catch (InterruptedException e){
                break;
            }
        }
    }
}