Question

public void cancelTimer(String timerName) in EJB Timer Service

Asked by: rama_krishna580

Hi Experts,

I have some problem with TimerService EJB 2.1. i am getting an small error ....

And in my classpath i have included j2ee.jar which contains Timerservice..but when i am trying to build it, it is saying
sessionContext.getTimerService(); not found...code is like this...

i have declared sessionContext everything ....but what could be the problem....its a bit urgent..

      public void cancelTimer(String timerName)
      {
            try
            {
                                                // Here is the error it is saying....only this below line
                  TimerService ts = sessionContext.getTimerService();

                  Collection timers = ts.getTimers();
                  Iterator it = timers.iterator();
              
                  while (it.hasNext())
                  {
                        Timer myTimer = (Timer) it.next();
                        if ((myTimer.getInfo().equals(timerName)))
                        {
                              myTimer.cancel();
                              System.out.println("Successfully Cancelled " + timerName);
                        }
                  }
            }
            catch (Exception e)
            {
                  System.out.println("Exception after create timer : "+ e.toString());
            }
            return;
      }

awaiting for the answers...

R.K

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Asked On
2004-11-12 at 01:15:47ID21204406
Tags

ejb

,

sessioncontext

Topics

Java Programming Language

,

Enterprise Java Beans (EJB)

,

New to Java Programming

Participating Experts
2
Points
500
Comments
13

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Answers

 

by: girionisPosted on 2004-11-12 at 01:20:35ID: 12563534

> but when i am trying to build it, it is saying
> sessionContext.getTimerService(); not found...

Can you post the exact error message? Can you make sure ti contaisn the above class? hat happens if you do:

jar -tfv j2ee.jar | grep TimerService

 

by: objectsPosted on 2004-11-12 at 01:20:39ID: 12563535

where is sessionContext var declared?

 

by: objectsPosted on 2004-11-12 at 01:21:51ID: 12563544

It should implement the EJBContext interface.
Assuming it does try:

TimerService ts = ((EJBContext)sessionContext).getTimerService();

 

by: rama_krishna580Posted on 2004-11-15 at 17:10:29ID: 12589611

Hi objects,

I have changed as per your suggestion, but still its giving error:
"The Method getTimerService() is undefined for the type EJBContext" ...
what could be the possible chances of this error here...

R.K

 

by: girionisPosted on 2004-11-15 at 23:21:00ID: 12591049

What specification of EJB are you using? I think the TimerService interface is only available from 2.1 version and above.

 

by: girionisPosted on 2004-11-15 at 23:21:38ID: 12591050

This is the j2ee 1.4 version with the EJBContext interface: http://java.sun.com/j2ee/1.4/docs/api/javax/ejb/EJBContext.html

 

by: rama_krishna580Posted on 2004-11-17 at 18:19:16ID: 12610791

I have already included J2EE1.4 j2ee.jar file in the classpath, and i tried with EJB 2.1 jar file also....but still the same error...?
any new thoughts.,.,,,? Still not solved......

R.K

 

by: objectsPosted on 2004-11-17 at 18:25:50ID: 12610824

are you sure the classpath that you changed is being used by whatever you are doing the build with?

 

by: rama_krishna580Posted on 2004-11-17 at 20:12:22ID: 12611315

Yes i am very sure...i have tried with both .jar files...but no change...

Any full example(s) available , so that i can compare with my application...if any thing can provide for me...

R.K

 

by: objectsPosted on 2004-11-17 at 20:20:58ID: 12611352

I don't think code examples will help, the code looks fine. The classloader is just not finding the class.
Perhaps there is a clash with your jar, check that you don't have any conflicting jars.

 

by: girionisPosted on 2004-11-17 at 23:43:47ID: 12612227

Can you check how many j2ee.jar files you have? Do a search on your computer.

 

by: rama_krishna580Posted on 2004-11-18 at 02:28:24ID: 12613058

Hi,

I am using Eclipse IDE 3.1,
so in this under the project classpath i have only one j2ee.jar ....

R.K

 

by: girionisPosted on 2004-11-18 at 02:30:59ID: 12613074

How many jars do you have in your classpath? Can you check that the *exact* class is not defined in any other ajr files before the j2ee.jar?

20120131-EE-VQP-002

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