Server Implementation Models

We showed the inheritance model, where the server implementation extends HelloPOA.
In the delegation or tie model the IDL interface is implemented using two classes.
- An IDL-generated Tie class (HelloPOATie.java) that inherits from the compiler-generated skeleton, but delegates all calls to an implementation class.
- A class that implements the IDL-generated operations interface (HelloOperations, by extending HelloPOA), which defines the IDL function.
The tie server allows one to write an interface implementation that extends some other class.