JAVA中定时器TimerTask的使用小例子

package qs;

import java.io.IOException;

import java.text.SimpleDateFormat;

import java.util.Calendar;

import java.util.Date;

import java.util.Locale;

import java.util.Timer;

import java.util.TimerTask;

public class TimerTest {

public static void main(String[] args)

{

Timer timer = new Timer();

//每隔三秒执行一次

// timer.schedule(new MyTask(), 0, 1000);

Date datetime= new Date();

SimpleDateFormat simpleDateFormat=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

System.out.println(simpleDateFormat.format(datetime));

Calendar calendar =Calendar.getInstance(Locale.CHINA);

System.out.println(calendar.get(calendar.YEAR));

System.out.println(calendar.get(calendar.MONTH));//月份少一个月数

System.out.println(calendar.get(calendar.DATE));

calendar.set(2012,7-1,16,15,33,0 );//利用Calendar定义一个时间

Date time =calendar.getTime(); //Calander 转换成Date格式

System.out.println(simpleDateFormat.format(time));

timer.schedule(new MyTask(), time);

}

private static class MyTask extends TimerTask

{

public void run()

{

System.out.println("自己定义的时间到了!!!");

}

}

}