polymorphism: why would you assign a interface reference to a subclass of superclass that implements the interface

Asked Dec 29 '18 at 10:40

Active Dec 29 '18 at 11:02

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i'm trying to understand the basics of polymorphism. I do understand why it could be useful to assign a superclass to a sub class or a sub to a super.

what i don't understand quite well is the logic of assigning or accessing a interface to the reference of a sub class, can someone explain why this can be usefull?

edited Dec 29 '18 at 11:02

Andrew Tobilko

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asked Dec 29 '18 at 10:40

Kenan

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I am not really sure what you mean by "..assign a interface reference to a subclass of superclass that implements the interface.." but I am guessing this may be related: [What does it mean to “program to an interface”?](https://stackoverflow.com/q/383947) – Pshemo Dec 29 '18 at 10:48

polymorphism: why would you assign a interface reference to a subclass of superclass that implements the interface

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