Explain what is an object?
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When will you use an interface and abstract class?
What is data abstraction? what are the three levels of data abstraction with Example?
Explain what is meant by polymorphism?
Can different parts of a partial class inherit from different interfaces?
Explain about a class?
Difference: Object Oriented Analysis (OOA) and Object Oriented Design (OOD)?
What is meant by inheritance? what are the advantages of inheritance?
What are associative classes?
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What is function override?
Can a class in java be inherited from more than one class?
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?
Is @functionalinterface annotation mandatory to define a functional interface? What is the use of @functionalinterface annotation? Why do we need functional interfaces in java?