What is the difference between an interface and abstract class?
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What is composition? Explain the purpose of composition.
Is it possible to create partial structs, interfaces and methods?
Can a class in java be inherited from more than one class?
Explain about the design phase?
Explain what is single and multiple inheritance?
Explain about abstraction?
What do you mean by abstract classes?
Explain the mechanism of composition?
Explain what is polymorphism?
Is @functionalinterface annotation mandatory to define a functional interface? What is the use of @functionalinterface annotation? Why do we need functional interfaces in java?
What are inner classes and what is the practical implementation of inner classes?
What's the order of call of constructors in inheritiance?