学习多线程笔记三——中断

package day1;

import java.util.concurrent.TimeUnit;

public class Interrupted {
    public static void main(String[] args){
        // sleepThread不停的尝试睡眠
        Thread sleepThread = new Thread(new SleepRunner(), "SleepThread");
        // WorkThread不停的运行
        Thread WorkThread = new Thread(new WorkRunner(), "WorkThread");
        sleepThread.start();
        WorkThread.start();
        // 休眠5秒，让sleepThread和WorkThread充分运行
        try {
            TimeUnit.SECONDS.sleep(5);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        sleepThread.interrupt();
        WorkThread.interrupt();
        System.out.println("SleepThread interrupted is " + sleepThread.isInterrupted());
        System.out.println("WorkThread interrupted is " + WorkThread.isInterrupted());
        // 防止sleepThread和WorkThread立刻退出
        try {
            TimeUnit.SECONDS.sleep(2);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    static class SleepRunner implements Runnable {
        @Override
        public void run() {
            while (true) {
                try {
                    TimeUnit.SECONDS.sleep(10);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                    Thread.currentThread().interrupt();
                    break;
                }
            }
        }
    }

    static class WorkRunner implements Runnable {
        @Override
        public void run() {
            while (true) {
            }
        }
    }
}

输出：

SleepThread interrupted is false
WorkThread interrupted is true
java.lang.InterruptedException: sleep interrupted
    at java.lang.Thread.sleep(Native Method)
    at java.lang.Thread.sleep(Unknown Source)
    at java.util.concurrent.TimeUnit.sleep(Unknown Source)
    at day1.Interrupted$SleepRunner.run(Interrupted.java:38)
    at java.lang.Thread.run(Unknown Source)

sleep，join等抛出InterruptedException异常的方法会在中断后恢复中断位，调isInterrupted()方法返回true