java timer 指定某时间点执行

package com.northeasttycoon.service;

import java.util.Calendar;
import java.util.Timer;
import java.util.TimerTask;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * describe : 指定某一时间点执行任务操作
 * @author northeasttycoon
 */
public class ServiceBusiness implements IServiceBusiness {

final private static Log log = LogFactory.getLog(ServiceBusiness.class);

public ServiceBusiness() {
     }

public void testTimer() throws Exception  {

// 时间类
        Calendar startDate = Calendar.getInstance();

//设置开始执行的时间为 某年-某月-某月 00:00:00
        startDate.set(startDate.get(Calendar.YEAR), startDate.get(Calendar.MONTH), startDate.get(Calendar.DATE), 15, 10, 0);

// 1小时的毫秒设定
        long timeInterval = 60 * 60 * 1000;

// 定时器实例
        Timer t = new Timer();

t.schedule(new TimerTask() {

public void run() {

// 定时器主要执行的代码块
                System.out.println("定时器主要执行的代码!"+CommonUtil.GetNowDateTime());
            }

// 设定的定时器在15:10分开始执行,每隔 1小时执行一次.
        }, startDate.getTime(), timeInterval ); //timeInterval 是一天的毫秒数，也是执行间隔

};

public static void main(String[] args) throws Exception {
        ServiceBusiness business = new ServiceBusiness();
        business.testTimer();
    }