public class ThreadService {

    private Thread executeThread;

    private boolean finished = false;

    public void execute(Runnable task) {
        executeThread = new Thread() {
            @Override
            public void run() {
                Thread runner = new Thread(task);
                runner.setDaemon(true);

                runner.start();
                try {
                    runner.join();
                    finished = true;
                } catch (InterruptedException e) {
                    //e.printStackTrace();
					
                }
            }
        };

        executeThread.start();
    }

    public void shutdown(long mills) {
        long currentTime = System.currentTimeMillis();
        while (!finished) {
            if ((System.currentTimeMillis() - currentTime) >= mills) {
                System.out.println("任務超時，需要結束他!");
                executeThread.interrupt();
                break;
            }

            try {
                executeThread.sleep(1);
            } catch (InterruptedException e) {
                System.out.println("執行執行緒被打斷!");
                break;
            }
        }

        finished = false;
    }
}
 

用到了執行緒中的守護執行緒和打斷，然後給執行緒一個時間，超時強制結束和正常結束