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What is @functionalinterface?
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What is the difference between public, private and protected access modifiers?
What is an abstraction and why is it important?
Is @functionalinterface annotation mandatory to define a functional interface? What is the use of @functionalinterface annotation? Why do we need functional interfaces in java?
A class inherits from 2 interfaces and both the interfaces have the same method name as shown below. How should the class implement the drive method for both car and bus interface?
Tell me something about abstract classes?
Which OOPS concept is used as a reuse mechanism?
What is early and late Binding?
Explian following terms: Constraint Rules, Design by contract.
If a class inherits an interface, what are the 2 options available for that class?
Does a concept HAVE to become a class in Design?
Explain the mechanism of composition?
Can we override static methods of a class?
Design Patterns 
