Extending an enum via inheritance

Question

I know this rather goes against the idea of enums, but is it possible to extend enums in C#/Java? I mean \"extend\" in both the sense of adding new values to an enum, but a

Answer 1

As far as java is concerned it is not allowed because adding elements to an enum would effectively create a super class rather than a sub class.

Consider:

 enum Person (JOHN SAM}   
 enum Student extends Person {HARVEY ROSS}

A general use case of Polymorphism would be

 Person person = Student.ROSS;   //not legal

which is clearly wrong.