Difference between composition and inheritance ?
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What is the default access modifier in a class?
Can an interface have an inner class?
What is a default method? Why do we need default methods in java 8 interfaces?
What is the difference between new and override?
What is the benefit of Composition over Inheritance?
What is association?
Write down how will you create a Binary tree?
what is full form OOP?
What are manipulators?
What is an abstraction and why is it important?
What is the main use of message metaphor in object-oriented programming?
How can we restrict inheritance for a class so that no class can be inherited from it?