Got another breakthrough after about 4-5 days. Although I am not yet successful, I feel that I am pretty close. I am also as you are trying to do a simple JMS stuff in WSAD 5.0.

I also got the exception.
java.lang.IncompatibleClassChangeError: com.ibm.CORBA.iiop.ORB method createObjectURL(Ljava/lang/String;)Lcom/ibm/CORBA/iiop/ObjectURL

I am giving a small sample of the code that I have.

Properties env = new Properties( );

env.put(Context.SECURITY_PRINCIPAL,"guest");

env.put(Context.SECURITY_CREDENTIALS,"guest");

env.put(Context.INITIAL_CONTEXT_FACTORY,"com.ibm.websphere.naming.WsnInitialContextFactory");

InitialContext jndi = new InitialContext(env);


// Look up a JMS connection factory

TopicConnectionFactory conFactory =(TopicConnectionFactory)jndi.lookup("TopicConnFactory");

Also what is important is the jar files that you add and the order of these jar files.

runtimes/base_v5/java/jre/lib/rt.jar

runtimes/base_v5/mqjms/Java/lib/jms.jar

runtimes/aes_v4_jars/lib/ns.jar

wstools/eclipse/plugins/com.ibm.websphere.aes.v4_4.0.4/lib/iwsorb.jar

runtimes/base_v5/lib/naming.jar

All these folders are under the
Program Files/IBM/WebSphere Studio/

Now I am getting the following exception
javax.naming.NameNotFoundException: TopicConnFactory

where TopicConnFactory is the lookup for the TopicConnectionFactory.

If anybody has solve this problem, whould he be so kind as to explaining how.

I admit it sounds like a class version mismatch (something to do with using the wrong jar files). I'm using naming.jar, namingclient.jar, ibmorb.jar and ecutils.jar but where should I pick them up from (I've found at least two version of ibmorb.jar).