public class ThreadTest{

     public static void main(String args[]){

   // 创建一个线程，启动

    MyThread thread = new MyThread();
    thread.start();
    // Do work...
    
    // 停止
    thread.allDone = true;
}
    
    class MyThread extends Thread {
        boolean allDone = false;
    
        public void run() {
            while (true) {
                // Do work...
                if (allDone) {
                    return;
                }
                // Do work...
            }
        }
    }