How can I use Observer/Observable via RMI?

A solution on how to create a RemoteObserver can be found in Database Programming with JDBC and Java, George Reese, 1st Edition 1997, O'Reilly (ISBN 1-56592-270-0) p.153 ff.

I am not sure if its possible to post the code, so I suggest you organize yourself this book or its sample sourcecode (i.e. library, colleagues).