java安全停止线程的方法详解

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

    @Override
    public void run() {
      String threadName=Thread.currentThread().getName();
      while (!isInterrupted()){  //Runnable中用 Thread.currentThread().isInterruputed
        System.out.println(threadName+" is run");
      }
      System.out.println(threadName+" flag is "+isInterrupted());
    }
  }
  public static void main(String[] args) throws InterruptedException {
    Thread testThread=new TestThread("test");
    testThread.start();
    Thread.sleep(2000);
    testThread.interrupt();
  }