RemoteException and ClassNotFoundException

Question

i'm a newbie in RMI, i followed the tutorial, but can't get my example to work.
i did a jar with all classes needed.
this is the content of server.jar:
META-INF/
META-INF/MANIFEST.MF
jharon/
jharon/model/
jharon/model/AbstractDocument.class
jharon/model/Category.class
jharon/model/DocumentFactory.class
jharon/model/DocumentFactoryIf.class
jharon/model/DocumentKeeper.class
jharon/model/HtmlDocument.class
jharon/model/ImmutableCategoryIf.class
jharon/model/ImmutableDocumentIf.class
jharon/model/MutableCategoryIf.class
jharon/model/MutableDocumentIf.class
jharon/model/Profile.class
jharon/model/Publishable.class
jharon/server/
jharon/server/Publisher.class
jharon/server/PublisherEngine.class
jharon/server/PublisherEngine_Skel.class
jharon/server/PublisherEngine_Stub.class
the jar has been constructed by ANT with this script:
<target name="compile" depends="init" description="Compile sources" >
        <javac   srcdir="${src.dir}"
            destdir="${build.dir}"
            debug="on"
            deprecation="on">
            <include name="**/*.java"/>
            <classpath refid="project.class.path"/>
        </javac>
        <rmic  base="${build.dir}" includes="jharon/server/PublisherEngine.class" />
    </target>
<target name="server-jar" depends="init, compile" description="Create
        server-jharon.jar">
        <jar jarfile="${dist.dir}/${server}"
            basedir="classes">
            <include name="jharon/server/**/*.class"/>
            <include name="jharon/model/**/*.class"/>
             <manifest>
                <attribute name="Main-Class"
                    value="jharon.server.PublisherEngine"/>
            </manifest>
        </jar>
    </target>then, following the tutorial i unset the CLASSPATH, launch the rmiregistry, and then:
java -jar server-jharon.jar
which reports me this very long error:
java -jar server-jharon.jar
PublisherEngine exception: RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: jharon.server.PublisherEngine_Stub
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: jharon.server.PublisherEngine_Stub
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:352)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:207)
at sun.rmi.transport.Transport$1.run(Transport.java:148)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:144)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:701)
at java.lang.Thread.run(Thread.java:534)
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:223)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:350)
at sun.rmi.registry.RegistryImpl_Stub.rebind(Unknown Source)
at java.rmi.Naming.rebind(Naming.java:160)
at jharon.server.PublisherEngine.main(PublisherEngine.java:33)
Caused by: java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: jharon.server.PublisherEngine_Stub
at sun.rmi.registry.RegistryImpl_Skel.dispatch(Unknown Source)
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:342)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:207)
at sun.rmi.transport.Transport$1.run(Transport.java:148)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:144)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:701)
at java.lang.Thread.run(Thread.java:534)
Caused by: java.lang.ClassNotFoundException: jharon.server.PublisherEngine_Stub
at java.net.URLClassLoader$1.run(URLClassLoader.java:199)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:219)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:430)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:165)
at java.rmi.server.RMIClassLoader$2.loadClass(RMIClassLoader.java:631)
at java.rmi.server.RMIClassLoader.loadClass(RMIClassLoader.java:257)
at sun.rmi.server.MarshalInputStream.resolveClass(MarshalInputStream.java:200)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1513)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1435)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1626)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)
... 9 more
anyone could help me please?
thanks
Valerio

Answer 1

apparently i solved with this sequence of commands:
1) unset $CLASSPATH
2) export CLASSPATH=/local/path/to/server-jharon.jar
3)rmiregistry &
4) java -jar server-jharon.jar
and i get this answer:
PublisherEngine bound
which means (i hope) that the rmi registry has registred that instance...
i'll keep updated