Define a good interface?
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Can constructors be parameterized?
Explain what a method is?
Differences between functional programming and object-oriented programming?
What are abstract functions? Why are they used?
Which OOPS concept is used as a reuse mechanism?
What is a final variable?
Can you call the base class method without creating an instance?
Describe inheritance and non-inheritance of a derived class?
What is the main difference between overloading and overriding?
What is dynamic or run time polymorphism?
What is the function of messaging metaphor?
What is the difference between an error and an exception?