I have 2 jar files client & server. when i start my client it says ClassNotfoundException:ServerStub not found. What is the reason for this error ? My server has been started and listening to default port. I dont have any server classes in my client.jar. Iam i missing something. i dont have any policy file. what is the use of it and how i should i use it. when i run the program without jars it works fine. Thanks.