线程没有停止

Question

我试图在另一个线程中生成一个新线程。无论如何我都无法阻止线程。有什么办法可以在执行操作后干净利落地退出。

package p.Threads;

public class Thread2 {

    private volatile boolean flag = false;

    public Thread2(){
        Thread t2 = new Thread(){

            public void run(){
                System.out.println("t2 started  :::::::::::::: ");
                Thread2 t3 = new Thread2();
                try {
                    t3.start2ndThread();

                } catch (InterruptedException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                }                   
            }

        };
        t2.start();
        t2.interrupt();
    }

    public void start2ndThread() throws InterruptedException{

        Runnable r3 = new Runnable() {

            @Override
            public void run() {
                System.out.println("Thread t3 started >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ");
                try {
                    Thread.sleep(2000);

                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        };

        Thread t3 = new Thread(r3);
        t3.start();
        t3.join(2000);
        terminate();            
    }

    public void terminate(){
        flag = true;
    }

    public static void main(String[] args) {
        Thread2 thread2 = new Thread2();            
    }
}

Answer 1

你中断了t2线程，但已经产生了t3线程。

你需要一个catch块来捕获t2的InterruptedException。

在catch中，在t3上调用中断。