如何在java中重启线程？

public class RestartThread {
    public static void main(String[] args) {
        // 创建一个线程实例
        MyThread myThread = new MyThread();

        // 启动线程
        myThread.start();

        // 等待线程结束
        try {
            myThread.join();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        // 重启线程
        MyThread newThread = new MyThread();
        newThread.start();
    }
}

class MyThread extends Thread {
    @Override
    public void run() {
        System.out.println("线程正在运行...");
    }
}