What do you mean by abstract classes?
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Which oops concept is used as reuse mechanism?
what is virtual function and pure virtual function ?
Is it possible to provide method implementations in java interfaces? If possible, how do we provide them?
What are the Design Patterns you know.
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Why is message passing between the objects important?
Explain about realistic modeling?
If a method definition has been specified in the 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?
How many methods are there in the serializable interface?
What is composition? Explain the purpose of composition.
What is single and multiple inheritance?
Do we require parameter for constructors?
What are the different types of inheritance?
Design Patterns 
