Trouble running a simple session bean

Question

I am trying to run a simple stateless session bean given in the book Head First EJB. For this purpose, I am using j2sdkee1.3 and j2sdk1.4.2_08. I successfully started the j2ee server and managed to deploy the bean. But when I try to run the client, I get the following cryptic error:
Exception in thread "main" java.lang.NoClassDefFoundError: com/sun/corba/se/internal/util/JDKBridge
at com.sun.corba.ee.internal.core.IOR$LocalCodeBaseSingletonHolder.<clinit>(IOR.java:79)
at com.sun.corba.ee.internal.core.IOR.<init>(IOR.java:218)
at com.sun.corba.ee.internal.iiop.messages.LocateReplyMessage_1_2.read(LocateReplyMessage_1_2.java:137)
at com.sun.corba.ee.internal.iiop.IIOPInputStream.unmarshalHeader(IIOPInputStream.java:126)
at com.sun.corba.ee.internal.iiop.IIOPConnection.getResponse(IIOPCoonection.java:670)
at com.sun.corba.ee.internal.iiop.IIOPConnection.send(IIOPConnection.java:777)
at com.sun.corba.ee.internal.corba.InitialNamingClient.locateObject(InitialNamingClient.java:786)
at com.sun.corba.ee.internal.corba.InitialNamingClient.getIORUsingHostInfo(InitialNamingClient.java:597)
at com.sun.corba.ee.internal.corba.InitialNamingClient.resolveCorbaloc(InitialNamingClient.java:573)
at com.sun.corba.ee.internal.corba.InitialNamingClient.resolveUsingORBInitRef(InitialNamingClient.java:544)
at com.sun.corba.ee.internal.corba.InitialNamingClient.cachedInitialReferences(InitialNamingClient.java:1080)
at com.sun.corba.ee.internal.corba.InitialNamingClient.resolve_inital_references(InitalNamingClient.java:981)
at com.sun.corba.ee.internal.corba.ORB.resolve_initial_references(ORB.java:2358)
at com.sun.enterprise.naming.SerialContext.getProvider(SerialContext.java:55)
at com.sun.enterprise.naming.SerialContext.lookup(SerialContext.java:154)
at javax.naming.InitialContext.lookup(Unknown Source)
at AdviceClient.go(AdviceClient.java:16)
at AdviceClient.main(AdviceClient.java:10)
I have set my classpath to the following:
CLASSPATH=.;%J2EE_HOME%\lib\j2ee.jar
I would really appreciate if somebody could help me with this error. Thank you.

Answer 1

There is a ClassDefNotFound Exception, this means that a class used (probably by the corba marshalling stuff) cannot be located. You'll need to add these classes to the client's CLASSPATH.
Usually a client-jar file can be created or is provided by the j2ee server. If you're using the sun-wapp-server then it is done this way:
- deploy the beans to the server (asadmin deploy)
- create the client-stubs (asadmin client-stubs)
- add the created client-stubs to the clients class path.
I don't remember the exact commands for asadmin. Plz check the help. (asadmin help)
In JBOss youll have to add jboss-all.jar to the client's classpath. It depends on the j2ee server you use.