![]() In order for method overriding, we need Inheritance and Polymorphism, as we need a method with the same signature in both superclass and subclass. It's one of the magic of object-oriented programming where the method is chosen based upon an object at runtime. What is the method overriding in OOP or Java? ( answer) () is overloaded as we have a 6 or 7 println() method each accepting a different type of parameter.Ģ. When we have multiple methods with the same name but different functionality then it's called method overloading. It's one of the oldest OOPS concept questions, I have seen it 10 years ago and still see it now. What is method overloading in OOP or Java? ( answer) If you are a fresher and junior Java developer with 2 to 3 years of experience then you must revise these questions, learn if you don't know to do well on your Java Job interviews.ġ. If you are a senior Java developer then you already know the answers to this question and I suggest you practice more on object-oriented analysis and design skills i.e. They are mostly asked at first a few rounds like on screening round or on the telephonic round. In this article, I am going to share with you some OOPS concept-based Java interview questions that I have collected from friends and colleagues and they have seen in various Java interviews on different companies. These questions are more difficult and require not only a true understanding of OOP fundamentals but also about SOLID design principles and patterns.ģ0 OOPS Interview Questions in Java with Answers If you look for Java interview questions for 2 to 4 years experienced programmer, you will find lots of questions based upon OOP fundamentals like Inheritance and Encapsulation but as you gain more experience, you will see questions based on object-oriented analysis and design like designing and coding a vending machine or implement a coffeemaker in Java. It makes sense as well, as these are the programmers who must know the OOP basics like Abstraction, Inheritance, Composition, Class, Object, Interface, Encapsulation, etc.
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