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October 2000



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rmiregistry needs to find the stub

Posted by jdv on September 13, 2001 at 9:18 PM

> Hello,

> I'm trying to get a simple RMI app. up and running (from the Sun RMI
> tutorial,
> ).
> Anyways, I'm running both the server and client in the same directory.
> I created the interface, the service, the server, and the client all
> according to the code given in the tutorial. I generated the stub and
> skel classes. rmiregistery is running, but when I try to start the
> server, this is what I see.....

> java.rmi.ServerException: RemoteException occured in server thread;
> nested exception is:
> java.rmi.UnmarshalException: error unmarshalling arguments; nested
> exception is:
> java.lang.ClassNotFoundException: CalculatorImpl_Stub

> The CalculaorImpl_Stub class is sitting right there, but jdk says it's
> not there. I'm sure it's something really simple I'm missing. Thank
> you for any help you might be able to provide.

This one caught me, as well. It looks like that when you run this test _locally_, rmiregistry needs to be able to find the stub. I had to run it in the same directory as CalculatorImpl_Stub to get things to work. I imagine you could put the stub in the rmiregistry's classpath, as well.

My understanding is that if you are running the example on different boxes/JVMs, the stub should not be on the classpath of the rmiregistry process.

This sounds wrong, and I haven't tested. Still an RMI beginner.



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