Interface inheritance is public inheritance, while implementation inheritance is private inheritance

Question

Is there any notion of " Interface inheritance is public inheritance, while implementation inheritance is private inheritance" in java?

I have read this post.

malaguna · Accepted Answer · 2015-10-08 10:59:28Z

0

I read the post you linked. In this post, Péter Török states about Private Inheritance the following:

However, if B privately inherits from A, B is-implemented-in-terms-of A: only the implementation of A is inherited, not its interface. Thus (references/pointers to) B objects can not be used in places where A objects are expected.

I don't think there is such thing in Java as Private Inheritance, at least in the terms expressed above.

So, after reading the post and considering that in Java:

Interface Inheritance is related to interfaces and classes implementing this interfaces, and
Implementation Inheritance is related to class specialization

I think it is not possible the case where you create a Class B that implements an Interface A or extends a Class A, and this Class B couldn't be used as A.

answered Oct 8, 2015 at 10:59

malaguna

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