classcast exception while using JMS with Jboss4.0.3 SP1

[csudhi]

I m using JBoss 4.0.3 and i am getting a class cast exception when i try to look up any thing in the context...
e.g. when i say:
myQueue = (Queue) ctx.lookup("queue/A")
i get a class cast exception although org.jboss.mq.SpyQueue implements javax.jms.Queue:

java.lang.ClassCastException: org.jboss.mq.SpyQueue



I have included jboss-j2ee.jar in the classpath.

Any help will be appreciated.

-Sudheer.

[jaikiran]

Check, if there are more than one jboss-j2ee.jar files in your classpath

[csudhi]

Thanks jaikiran for responding. I just figured out that i have both jboss-j2ee.jar and jbossall-client.jar in my classspath. Both have javax.jms.Queue in them and could be of different versions. jbossall-client.jar has both org.jboss.mq.SpyQueue and javax.jms.Queue.

I removed jboss-j2ee.jar from my classspath to resolve my issue.