Is it possible to use inheritance in this situation? (Java)

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Published on 2010-05-11T03:33:46Z Indexed on 2010/05/11 3:44 UTC
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java

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inheritance

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superclass

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subclass

I have ClassA and ClassB, with ClassA being the superclass.

ClassA uses NodeA, ClassB uses NodeB.

First problem: method parameters. ClassB needs NodeB types, but I can't cast from the subclass to the superclass. That means I can't set properties which are unique to NodeB's.

Second problem: When I need to add nodes toClassB, I have to instantiate a new NodeB. But, I can't do this in the superclass, so I'd have to rewrite the insertion to use NodeB.

Is there a way around it or am I gonna have to rewrite the whole thing?

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