java 定时任务 TimerTask Timer

package com.test.tasket;

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.Locale;
import java.util.Timer;
import java.util.TimerTask;

public class TestTasket extends TimerTask{
private int count = 0;
private static SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");

/**
* @param args
*/
public static void main(String[] args) {
TestTasket tt = new TestTasket();
tt.testTime();

}

public void testTime()
{
try {
TestTasket tasket = new TestTasket();
Timer timer = new Timer();
String timeNow = "2011-10-31 11:25:00";
Date timeDate = sdf.parse(timeNow);
timer.schedule(tasket,timeDate, 1000);
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@Override
public void run() {
System.out.println("时间：" + sdf.format(new Date()) + "已经执行任务"+count+"次");
count ++ ;

}