A graphical library containing a class A (Spacial), B (Geometry) and C (Node). For a theoretical D extends<T extends Spatial> (I know doesn't exist) for shared functionalities between their further child. We would have inserted that into A if we could have.

-Edit-

To be fair, this question is half academic. There are work-arounds, multiple. But since this question does not violate the multiple inheritance nor cuz issue at "compile" time, I'm very curious since it seems like there *should* be some way to do so.

Can you explain what problem you're trying to solve?

Class D can implement multiple interfaces, even if they have overlap. This sounds closest to what you're asking.

A graphical library containing a class A (Spacial), B (Geometry) and C (Node). For a theoretical D extends&lt;T extends Spatial&gt; (I know doesn't exist) for shared functionalities between their further child. We would have inserted that into A if we could have.

-Edit-

To be fair, this question is half academic. There are work-arounds, multiple. But since this question does not violate the multiple inheritance nor cuz issue at "compile" time, I'm very curious since it seems like there *should* be some way to do so.

Direct to the point: If you have class A, B and C, B and C inheriting A, is there a way to make a class D inherit B OR C (not multiple inheritance)? A kind of inverted generic? Thanks for your time.

A partially known inheritance