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JavaRanch » Java Forums » Certification » EJB Certification (SCBCD/OCPJBCD)
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Timers question

Deepak Jain
Ranch Hand

Joined: Aug 05, 2006
Posts: 637
Do PostConstruct Methods of Timers are invoked after the timeout ?
16:22:24,687 INFO [Server] JBoss (MX MicroKernel) [4.2.3.GA (build: SVNTag=JBoss_4_2_3_GA date=200807181417)] Started in 29s:375ms
16:22:35,546 INFO [STDOUT] init() of HelloWorldTimer
16:22:35,578 INFO [STDOUT] buisnessMethod
16:22:35,578 INFO [STDOUT] Timer created
16:23:35,578 INFO [STDOUT] init() of HelloWorldTimer
16:23:35,578 INFO [STDOUT] ejbTimeout() I am the timeout method of this timer bean. I am of javax.ejb.TimedObject
16:23:35,578 INFO [STDOUT] In TimeOut Method:I will execute after 1 minute and only once.This must be a object that implements Serializable interface
The above logs does indicate that. This implies when the timer expires, the container
a) creates a new Bean
b) Does DI
c)Invokes the Timeout method.
Is this correct?

Tomaszz Lewandowski
Ranch Hand

Joined: Sep 07, 2007
Posts: 30

From core spec (p.482):

The timeout
callback method invocation for a timer that is created for a stateless session bean or a message-driven
bean may be called on any bean instance in the pooled state.

So it is the container choice to use existing instance or create new one (as in your case).

Regards<br />Tomasz Lewandowski<br />SCJP5 (97%) | SCWCD5 (98%)
I agree. Here's the link:
subject: Timers question
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