java 线程超时时间

public static void main(String[] args)  { String failReason = null;Future<Object> f=new FutureTask(new Callable<Object>() {@Overridepublic Object call() throws Exception {// TODO Auto-generated method stubThread.sleep(1000*60);return null;}});new Thread(f).start();try {f.get(5l, TimeUnit.SECONDS);} catch (InterruptedException e) {  failReason = "执行线程在等待计算结果时被中断！"; } catch (ExecutionException e) {  failReason = "执行线程等待计算结果，但计算抛出异常！";} catch (TimeoutException e) {  failReason = "执行线程等待计算结果超时，因此中断任务线程！";  }finally{System.out.println(failReason);}}

public static void main(String[] args) {Timer timer=new Timer();//实例化Timer类 //安排在指定延迟后执行指定的任务。timer.schedule(new TimerTask(){public void run(){ System.out.println("out"); this.cancel();}},500);//五百毫秒}