1. 创建一个Session Bean

2. 注入SessionContext Resource

3. 构造一个Timer

4. 利用@Timeout注解定义定时任务的具体执行

package com.icode.jejb.time;/** * Created with IntelliJ IDEA. * User: alexz * Date: 14-6-25 * Time: 下午4:44 * To change this template use File | Settings | File Templates. */public interface TimerTask {    void start();}

package com.icode.jejb.time;import javax.annotation.Resource;import javax.ejb.*;import java.util.Date;/** * Created with IntelliJ IDEA. * User: alexz * Date: 14-6-25 * Time: 下午4:44 * To change this template use File | Settings | File Templates. */@Stateless@Remote(value = TimerTask.class)public class SimpleTimerTask implements TimerTask {    private int count = 0;    @Resource    private SessionContext sessionContext;    public SimpleTimerTask() {        System.out.println("Instance the SimpleTimerTask Bean!!!!!!!!!!!!!");    }    @Timeout    public void execute(Timer timer) {        String params = (String) timer.getInfo();        System.out.println(count + ": " + params);        count++;    }    @Override    public void start() {        TimerService timerService = sessionContext.getTimerService();        timerService.createTimer(new Date(new Date().getTime() + 2000), 3000, "This is my first timer task!!!");    }}