线程休眠示例Thread.sleep()

public class TestInterrupt {
  public static void main(String[] args) {
    MyThread thread = new MyThread();
    thread.start();
    try {
Thread.sleep(5000);
    }
    catch (InterruptedException e) {
     e.printStackTrace();
    }
    thread.interrupt();
  }
}


class MyThread extends Thread {
boolean flag = true;
  public void run(){
      try {
        sleep(10000);
      } catch (InterruptedException e) {
        System.out.println("hahahahaha");
      }
  }

}

主线程休眠5秒后interrupt正在休眠的子线程！interrupt后为什么程序就结束了呢？和前一篇矛盾了？