interrupt()、interrupted()、isInterrupted()区别？

1、interrupt() 线程实例方法，通知线程中断

2、Thread.interrupted() 线程静态方法，返回中断标志且清除（恢复）中断标志

3、Thread.currentThread().isInterrupted() 线程实例方法，仅返回中断标志

2 和 3 的区别：相同点：都是判断线程状态即返回线程状态

                         唯一区别：interrupted() 清除中断标志

                                           isInterrupted() 不清除中断标志

public class InterruptThread implements Runnable{
    @Override
    public void run() {
        System.out.println(Thread.currentThread().getName() +" interrupted flag is " + Thread.currentThread().isInterrupted());

        while (!Thread.currentThread().isInterrupted()) {
            try {
                System.out.println(Thread.currentThread().getName() + " is running .");
                TimeUnit.SECONDS.sleep(1);
            } catch (InterruptedException e) {
                // 响应中断，抛出异常后中断位置会被复位，自己中断自己
                Thread.currentThread().interrupt();
                // 注意区别在这里
                System.out.println(Thread.currentThread().getName()
                        +" interrupted flag is " + Thread.currentThread().isInterrupted());
            }
        }
    }

    public static void main(String[] args) throws InterruptedException {
        Thread t = new Thread(new InterruptThread());
        t.start();
        TimeUnit.SECONDS.sleep(3);
        t.interrupt();
    }
}