Dynamic Class Loading & AbstractMethodError

Hello to everyone!

I'm a newbie when it matters to dynamic class loading.

What's happening is this:

1- I start rmiregistry
2- I Launch a RMI server with one method only. And this RMI stub is
dynamically downloaded thru a ClassServer(like the one in the O'Reilly Java
RMI book).

Let's say that the only remote method that exists is: "public Task getTask();"
(And Task being a interface)

3- In the implementation of that method i do "return new TaskMessage();"
(that implements Task interface)

4- I launch the client, and the client get's the stub and Task.class
dynamically.(Only these one by the way).

5- And for some reason, that i don't understand, java throws the following
error: AbstractMethodError " "StubFileName".getTask(); " In the following
line of the client source code:

"Task t = stub.getTask();"

Does anyone has a sugestion?

And another question, i've noticed that java was only interested in the
interface and in the stub. But if i have various concrete classes that
implements the Task Interface, how does he know which one to get? Or that is
done automatically when i invoke a method of that class... In these case i
didn't had the chance to see how it run's, because it gives the error in the
line stated before.

I hope anyone can help.

Thank you,
Miguel

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