Java中タイマー

import java.util.Calendar;

 import java.util.Date;

 import java.util.Timer;

 import java.util.TimerTask;



public class TimeTest {

     public static void main(String[] args) {

         timer1();

         //timer2();

         //timer3();

         //timer4();

     }



    //      ：      task     time   schedule(TimerTask task, Date time)

     public static void timer1() {

         Timer timer = new Timer();

         timer.schedule(new TimerTask() {

             public void run() {

                 System.out.println("-------       --------");

             }

         }, 2000);//        time,   2000  

    }



    //      ：      task     delay       peroid   

    // schedule(TimerTask task, long delay, long period)

     public static void timer2() {

         Timer timer = new Timer();

         timer.schedule(new TimerTask() {

             public void run() {

                 System.out.println("-------       --------");

             }

         }, 1000, 5000);

     }



    //      ：      task     delay       peroid   。

    // scheduleAtFixedRate(TimerTask task, long delay, long period)

     public static void timer3() {

         Timer timer = new Timer();

         timer.scheduleAtFixedRate(new TimerTask() {

             public void run() {

                 System.out.println("-------       --------");

             }

         }, 1000, 2000);

     }

    

     //      ：       task      firstTime           period  ．

    // Timer.scheduleAtFixedRate(TimerTask task,Date firstTime,long period)

     public static void timer4() {

         Calendar calendar = Calendar.getInstance();

         calendar.set(Calendar.HOUR_OF_DAY, 12); //    

        calendar.set(Calendar.MINUTE, 0);       //    

        calendar.set(Calendar.SECOND, 0);       //    



        Date time = calendar.getTime();         //          ,      12：00：00



        Timer timer = new Timer();

         timer.scheduleAtFixedRate(new TimerTask() {

             public void run() {

                 System.out.println("-------       --------");

             }

         }, time, 1000 * 60 * 60 * 24);//              

    }

 }