Explain about inheritance hierarchies?
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Explain the purpose of composition.
Explain the use of Vtable and what are the various problems to override the functions?
What are inner classes and what is the practical implementation of inner classes?
Explain about encapsulation?
If a method definition has been specified in class , its base class , and the interface which the class is implementing, which definition will be picked if we try to access it using interface reference and class object?
Can we reduce the visibility of the inherited or overridden method ?
What is the difference between data hiding and implementation?
What is method overriding?
What do you mean by Realization?
Are constructors inherited? Can a subclass call the parent's class constructor? When?
What is data encapsulation and what's its significance?
What is a try/ catch block?
Design Patterns 
