What is meant by “abstract interface”?
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Why abstraction is important?
Why are virtual users created?
What is the function of messaging metaphor?
Write basic concepts of oops?
Explain what is an object?
Does a class inherit the constructor of its super class?
What does the “abstract” keyword mean in front of a method? A class?
What is the difference between public, private and protected access modifiers?
Explain the different types of constructors
What is the difference between an error and an exception?
What is Abstract method and how different from Virtual Method?
Explain about instance in object oriented programming?