java定时器

package com.ideamov.service.util;

import java.util.Calendar;
import java.util.Timer;
import java.util.TimerTask;

public class Reminder {
 private static final int C_SCHEDULE= 0;
 private static boolean isRunning = false;
    Timer timer;
    public Reminder(int delaytime){
        timer = new Timer();
        timer.schedule(new ReminderTask(),1000,delaytime  * 1000);//推迟0秒运行，间隔delaytime秒重复运行。
    }
    public void stop(){
        timer.cancel();
    }
    class ReminderTask extends TimerTask{

        public void run() {
      Calendar c = Calendar.getInstance();
      if (!isRunning) {
       if (C_SCHEDULE == c.get(Calendar.HOUR_OF_DAY)) {
        isRunning = true;
        System.out.println("执行更新数据！");
        NewHotel.updateHotelInfo();
        isRunning = false;
       } else {
        System.out.println("更新数据时间未到！");
       }
      }
     }
       
    }
    public static void main(String[] args){
        new Reminder(60*60);
    }
}