RMI: "UnmarshallException"...stub class not found

I have both the client and the server on the same machine and the same directories.(including the stub and skeleton.Even then when i run the server program ,i get the error "java.rmi.UnMarshallException :stub class not found.(something like that)".Pl help me with this.

You may consider the path that reference to the stub class. For example, suppose that you have the
implementation class file Test.ImplRMI.class . Your root directory is c:\RMI. In this directory, you may
see the subdirectory Test, that is, c:\RMI\Test. In the subdirectory c:\RMI\Test, you need put the your
implementation class and stub, and skeleton class files You may also have the interface class file, say
IntfRMI.class and register RMI class file , say, RegRMI.class which is used to register the RMI server
with the rmiregistry. You may have them with the same package name , say, Test. The simple case is
to put Test.ImplRMI.class, stub and skeleton class of Test.ImplRMI.class, Test.IntfRMI.class,
Test.RegRMI.class in the directory c:\RMI\Test. After ready, you may run the rmiregistry program
in the root directory c:\RMI, and run the Test.RegRMI.class like this
java -Djava.security.policy=test.polcyfile Test.RegRMI
test.policyfile is the security policy file which is put in the root directory c:\RMI in this case. You may
also try java Test.RegRMI directly. I've forgotten what may happen. It might work or fail.
good luck,
Alfred Wu