What are the basic concepts of oop?
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Are constructors inherited? Can a subclass call the parent's class constructor? When?
Difference between encapsulation and data hiding ?
How will you define abstract classes?
Differentiate between data abstraction and encapsulation.
Explain about the relationship between object oriented programming and databases?
What are Classes and Objects?
What's the main difference between arraylist / hashmap and vector / hashtable?
What is a default method? Why do we need default methods in java 8 interfaces?
What is the use of ‘finalize’?
Is @functionalinterface annotation mandatory to define a functional interface? What is the use of @functionalinterface annotation? Why do we need functional interfaces in java?
Explain about a class?
What is meant by function overloading and function overriding?