java定时任务

java定时任务实现方法：

 public class TimingTask {
     private static int count = 0;
     private static SpiderService service = null;
       public static void startTask(int hour,int minute,int second) {
             TimerTask task = new TimerTask() {
                 @Override
                 public void run() {
                     service = new SpiderService();
                     service.service();
                     ++count;
                     System.out.println("时间=" + new Date() + " 执行了" + count + "次"); // 1次
                 }
             };
 
             //设置执行时间
             Calendar calendar = Calendar.getInstance();
             int year = calendar.get(Calendar.YEAR);
             int month = calendar.get(Calendar.MONTH);
             int day = calendar.get(Calendar.DAY_OF_MONTH);//每天
             //定制每天的21:09:00执行，
             calendar.set(year, month, day, hour, minute, second);
             Date date = calendar.getTime();
             Timer timer = new Timer();
             System.out.println(date);
 
            // int period = 2 * 1000;
             //每天的date时刻执行task，每隔2秒重复执行
            // timer.schedule(task, date, period);
             //每天的date时刻执行task, 仅执行一次
             timer.schedule(task, date);
         }

调用方法：

     public static void main(String[] args) {
                 //下面是两个任务
             TimingTask.startTask(11, 40, 00);
             TimingTask.startTask(11, 45, 00);
         }