Timer timer = new Timer();
tt = new timertask(loginFrame);
Button.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent event) {
                try{
                        timer.schedule(tt, 0, 1000*60*loginFrame.getti());
                    }catch(IllegalStateException e){
                        tt.cancel();//取消任务
                        tt = new timertask(loginFrame);//创建新任务
                        timer.schedule(tt, 0, 1000*60*loginFrame.getti());
                    }
            });

final ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1);
class Task implements Runnable { ... } // class Task implements Callable {...}
final ScheduledFuture<?> future = scheduler.schedule(new Task(), 10, TimeUnit.SECONDS);
if(!future.isDone()){ future.cancel(); }