What are the different principle of OOPS?
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How many instances can be created for an abstract class?
Explain persistence?
Define Destructor?
Difference: 'uses', 'extends', 'includes'
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Explain method overriding.
When do you prefer to use composition than aggregation?
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What is the difference abstract class and interface?
What is the abstract method modifier?
Explain what an object is.
What is inheritance?
What are extrinsic and intrinsic connections in object-oriented programming?
Can you tell something about GDI objects?