JDK Timer 使用

Java 定时器之 JDK Timer：

package com.wx.jdktimer;

import java.rmi.RemoteException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Timer;
import java.util.TimerTask;

import javax.ejb.CreateException;

public class JDKTimerBean implements IJDKTimer {

	private static final long serialVersionUID = -7118631760248451136L;
	private Timer timer = null;
	
	private void scheduleBatchService() {
		timer = new Timer();
		TimerTask timerTask = new bizTimerTask();
		timer.schedule(timerTask, new Date(), 24*60*60*1000);
				
	}
	
	private void clearTimer(){
		Logger.getInstance().info("In method -> clearTimer now");
		if (timer != null) {
			timer.cancel();
		}
		Logger.getInstance().info("Exit method -> clearTimer now");
	}

		
	class bizTimerTask extends TimerTask {
		BizServiceds = null;
		
		@Override
		public void run() {
			Logger.getInstance().info("do business logic....");
			System.out.println("do business logic....");
			ds = new BizService();
			ds.doBizLogic();
		}
		
	}
	
	public void ejbCreate() throws RemoteException, CreateException {
		
		scheduleBatchService();
    }
	
	public void ejbRemove() throws RemoteException {
		clearTimer();
	}
}