What is difference between encapsulation and abstraction?
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Can you call the base class method without creating an instance?
Why is OOP good?
What is difference between polymorphism and normalization?
What are the main features of oops?
Name some languages which have object oriented language and characteristics?
What are a base class, subclass, and superclass?
When will you use an interface and abstract class?
Describe inheritance and non-inheritance of a derived class?
What's the main difference between arraylist / hashmap and vector / hashtable?
What's the benefit of using inheritance?
What are virtual functions, base class pointer, derived class pointer, biding references?
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What is the use if instanceof keyword?