转换为ScheduledThreadPoolExecutor

转换为ScheduledThreadPoolExecutor

更换

Timer timer = new Timer();

与

ScheduledExecutorService service = Executors.newSingleThreadScheduledExecutor();

和

class Task extends TimerTask

与

class Task implements Runnable

和

timer.scheduleAtFixedRate(new Task(), 0, 1000);

与

service.scheduleAtFixedRate(new Task(), 0, 1000, TimeUnit.MILLISECONDS);

---

顺便说一句，您不应该尝试在另一个线程上更新GUI。相反，您必须向Swing GUI线程添加任务才能执行任务

    SwingUtilities.invokeLater(new Runnable() {        @Override        public void run() { textOut.setText("" + i++);        }    });