Can an abstract class implement an interface? - Quora

Answer (1 of 3): Yes, an abstract class can implement an interface. In object-oriented programming, an abstract class is a class that cannot be instantiated and is intended to be inherited by other classes. On the other hand, an interface is a set of method declarations that define a contract for

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What is an abstract class? - Quora

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When and why are interfaces used in Java? - Quora

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