Last week I wrote about some good Java OOP concept questions and In this article, I am going to share some frequently asked Inheritance based Java Interview questions and answers. Inheritance is one of the most important Object oriented concepts along with Abstraction, Encapsulation, and Polymorphism. Since most popular languages are object oriented e.g. Java and C++, you will always find a couple of questions from OOP concepts, particularly from Polymorphism and Inheritance. It's expected from a Java developers to know about these OOP concepts and have an understanding of when to use them e.g. many times Composition is the better choice than Inheritance because of flexibility it offers but when it comes to leverage polymorphism of type, you have to use Inheritance. In Java inheritance is supported by language using extends and implements keyword.
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