java Timer 定时任务

  Calendar calendar = Calendar.getInstance();
  int year = calendar.get(Calendar.YEAR);
  int month = calendar.get(Calendar.MONTH);
  int day = calendar.get(Calendar.DAY_OF_MONTH) + 1;// 隔后一天
  calendar.set(year, month, day, 2, 00, 00);// 每日2点执行
  Date date = calendar.getTime();
  Timer timer = new Timer();
  timer.scheduleAtFixedRate(new TimerTask() {
   public void run() {
    System.out.println("定时任务...");
   }
  }, date, 24 * 60 * 1000);// 周期一天
  System.out.println("可能认识的人`开启定时器......");