安全的终止线程

文章目录

1、线程中断操作适合用来取消或停止任务

2、利用boolean变量控制需要停止任务并终止该线程

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public static void main(String[] args) throws InterruptedException {

        //线程中断取消任务
        Runner one = new Runner();
        Thread  countThread = new Thread(one,"CountThread");
        countThread.start();
        TimeUnit.SECONDS.sleep(1);//睡眠1秒
        //Main线程对CountThread进行中断,使CountThread能够感知中断而结束
        countThread.interrupt();

        //boolean变量控制取消任务
        Runner two = new Runner();
        countThread = new Thread(two,"CountThread");
        countThread.start();
        TimeUnit.SECONDS.sleep(1);//睡眠1秒
        two.cancel();//Main线程对Runner Two进行取消，使CountThread能够感知on为false而结束
    }

    private static class Runner implements Runnable {
        private long i;
        private volatile boolean on = true;

        public void run() {
            while (on && !Thread.currentThread().isInterrupted()) {
                i++;
            }
            System.out.println("i:"+i);
        }

        private void cancel() {
            on = false;
        }
    }