RMI and old implementation class

Suppose that I have an old class who was built for a local program. I don’t have the source code and I don’t want to make any changes on this class.
Is it possible to use this class in a RMI application, and how?
Any example or url?
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thanassisAsked:
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lhankinsCommented:
It should be possible, you would follow these steps :

1) Implement your own RMI Server which wraps the main operations of the legacy class
2) In the implementation of your  RMI Server, simply delegate incoming method calls to the legacy class

Depending on the interface of the legacy class, you may have to jump through a few hoops to avoid any non-serializable parameters (in RMI, any parameter passed from client to server must be Serilizable).

   http://java.sun.com/docs/books/tutorial/rmi/designing.html

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