What is the @functionalinterface annotation?
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Is is possible to define our own functional interface?
What is the abstract method modifier?
What are abstract classes?
Can we override a method by using same method name and arguments but different return types?
What are the four important foundation concepts of OOP ?
How to achieve data abstraction?
Explain about encapsulation?
Explain the concept of multiple inheritance (virtual inheritance). Write about its advantages and disadvantages?
Difference: Object Oriented Analysis (OOA) and Object Oriented Design (OOD)?
What is data encapsulation and what is its significance?
What is the difference between an abstract class and interface in java?
What is operator overloading and polymorphism?
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