守护线程与线程中断区别_守护线程和主线程

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发布于 2022-11-07 09:05:27

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代码可运行

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代码可运行

1、主线程结束，守护线程也会提前结束执行。

public class ThreadDemo1 extends Thread{
	
	public ThreadDemo1(String name){
		super(name);
	}

	@Override
	public void run() {
		while(true){
			System.err.println(getName() + "线程运行了。。。");
			try {
				Thread.sleep(1000);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
	}
	
	public static void main(String[] args) {
		Thread t1 = new ThreadDemo1("线程一");
		Thread t2 = new ThreadDemo1("线程二");
		//设置为守护线程
		t1.setDaemon(true);
		t2.setDaemon(true);
		//启动线程
		t1.start();
		t2.start();
		//主线程2s后退出
		try {
			Thread.sleep(2000);
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
	}
	
	
}

主线程2s后退出后，守护线程也会提前结束。

2、中断线程

public class ThreadDemo1 extends Thread{
	
	public ThreadDemo1(String name){
		super(name);
	}

	@Override
	public void run() {
		while(!interrupted()){//中断状态判断
			System.err.println(getName() + "线程运行了。。。");
			try {
				Thread.sleep(1000);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
	}
	
	public static void main(String[] args) {
		ThreadDemo1 t1 = new ThreadDemo1("线程一");
		ThreadDemo1 t2 = new ThreadDemo1("线程二");
		//启动线程
		t1.start();
		t2.start();
		t1.interrupt();
	}
	
	
}