You can run  both the server  and client  applications on the same machine,
you must use rmic in the jdk to generate stubs when compiling your project, and for running  the project, you must use rmiregistry before calling java, and for running server, use -server option.
hope it can help you .

If you use J2SE 5 or higher version, it is not needed to use rmic to pregenerate stubs.
You can run  rmiregistry in your code, so it is not necessary to run rmiregistry before running  your app. The code looks like this:
LocateRegistry.createRegistry(int port);