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|Java - Interview Questions and Answers|
|Ans. Yes, We are using requireNonNull method for validating if the object is null.|
|Help us improve. Please let us know the company, where you were asked this question :|
|Like Discuss Correct / Improve  objects  util methods   rare|
|Difference between == and .equals() ?|
|What are the difference between composition and inheritance in Java?|
|What are different ways to create String Object? Explain.|
|Why do we need Inner classes ? Cant we just work with outer classes wherever we implement Inner classes ?|
|What is the difference between Encapsulation and Abstraction?|
|What are different ways of object creation in Java ?|
|What are points to consider in terms of access modifier when we are overriding any method?|
|What are the common uses of "this" keyword in java ?|
|How can we run a java program without making any object?|
|What is Polymorphism in Java ?|