I think parents posters idea about reuse is that if you need to reuse it, you make it into an abstraction and hoist (copy/paste) to a superclass and make where

I think parents posters idea about reuse is that if you need to reuse it, you make it into an abstraction and hoist (copy/paste) to a superclass and make where you took it from a child class. On the one hand, it does make the reuse explicit ("explicit is better than implicit"). Or you broaden the member elements to be able to take a broader interface. On the other hand, this is how you wind up with enterprise java.