Java线程-Interrupt如何结束线程？_java interrupt 关不掉-优快云博客

本文链接：https://blog.youkuaiyun.com/hello_world12138/article/details/115402449

本文探讨了如何在Java中正确使用中断机制，避免`sleep`, `wait`, `join`导致的中断异常。重点讲解了错误处理方式及Thread.interrupted()方法的应用，以确保线程中断流程的顺畅执行。

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实现此中断很简单，启动线程A，然后触发Interrupt

但是需要注意，sleep、wait、join等方法，会抛出Interrupt异常，并且设置中断标志位为false，导致判断isinterrupt退出循环失败，这一点需要注意

错误写法

public class TestThread extends Thread {

    @Override
    public void run() {
        while(!isInterrupted()){//中断标志位设为false，这里循环无法结束
            Log.d("ZTL","no interrupt!");
            try {
                sleep(1000);
            } catch (InterruptedException e) {
                Log.d("ZTL","Interrupt exception！！！");//被拦截
                e.printStackTrace();
            }
        }
        Log.d("ZTL","Thread is interruptend!  state= " + isInterrupted());
    }
}

正确写法

public class TestThread extends Thread {

    @Override
    public void run() {
        while(!isInterrupted()){
            Log.d("ZTL","no interrupt!");
           
        }
        Log.d("ZTL","Thread is interruptend!  state= " + isInterrupted());
    }
}

看一下sleep方法上的备注

* @throws  InterruptedException
     *          if any thread has interrupted the current thread. The
     *          <i>interrupted status</i> of the current thread is
     *          cleared when this exception is thrown.


也就是将中断标志位会被重置为false，并且抛出异常


中断且清空中断标志位的方法为：Thread.interrupted()