Enterprise bean timer service
Stateless session beans and message-driven beans can have a method that is executed periodically at regular intervals of time. This can be accomplished by using the enterprise bean timer service. The following example illustrates how to take advantage of this feature:
package com.ensode.jakartaeebook;
//imports omitted
@Stateless
public class JebTimerExampleBean implements
  JebTimerExample
  private static final Logger LOG =
    Logger.getLogger(JebTimerExampleBean.class.getName());
  @Resource
  TimerService timerService;
  @Override
  public void startTimer(Serializable info) {
    timerService.createTimer(new Date(), 5000, info);
  }
  @Override
  public void stopTimer(Serializable info) {
    Collection<Timer> timers = timerService.getTimers();
    timers.stream().filter...
