[jBoss-User] Local class not compatible

[John McDonald]

EJB gurus, I am compiling my classes in jbuilder with jdk version 1.2. However I run the client and Jboss in version 1.3. Also,to give you a context, what I am trying to achieve is as follows: I have a remote applet(on some machine in the world) I want to make that applet a remote object and be able to invoke methods on it. I have got this to work simply using RMI, but what I want to do now is much more complicated. The browser initializes the applet and it starts a new thread which is the remote interface and I’m  passing a copy of the remote object by using ObjectOuputStream to a servlet. The servlet is unpacking the object and making a connection to the ejb server, and passing a copy of the remote object to a bean. Then I “register” the remote object with rmiregistry(not through jndi, mostly because I don’t know how to do this with jndi). I want to be able to store a this in a local rmiregistry and at some time in the future I want to have a bean look up this reference to the remote object and execute methods on it. Once again, this exact config works with _just_ the rmiregistry, it is failing horribly now when I pass a copy of the object to the ejb server. I have an object(which is a serializable class called MemberRegistrationRequest. I simply pass the Remote reference to this object on contruct. It stores the Remote object in a variable of type Object. Then I pass this to the MemberRegistrationManager when I call home.create(MemberRegistrationManager). EjbCreate in the bean is doing NOTHING but storing a reference to the MemberRegistrationReuqest as an attribute of this bean. Somewhere in the create process it’s failing and giving me the following message.   ======== EXCEPTION ========== java.lang.reflect.UndeclaredThrowableException: java.io.InvalidClassException: c om.tradingproduce.notify.client.AppletServer_Stub; Local class not compatible: s tream classdesc serialVersionUID=2 local class serialVersionUID=0         at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(Unknow n Source)         at sun.rmi.transport.StreamRemoteCall.executeCall(Unknown Source)         at sun.rmi.server.UnicastRef.invoke(Unknown Source)         at org.jboss.ejb.plugins.jrmp.server.JRMPContainerInvoker_Stub.invokeHom e(Unknown Source)         at org.jboss.ejb.plugins.jrmp.interfaces.HomeProxy.invoke(HomeProxy.java :79)         at $Proxy0.create(Unknown Source)         at com.tradingproduce.TestMemberRegistration.main(TestMemberRegistration .java:45) ======= END EXCEPTION ===========   Anyone have any ideas?