Explain the different types of constructors
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What is operator overloading?
Explian following terms: Constraint Rules, Design by contract.
What is an abstract property. Give an example?
What is a Persistent, Transient Object?
Can you define OOP and principles of OOP?
Can a class implement two interfaces having default method with same name and signature?
Which oops concept exposes only necessary information to the calling functions?
What is the difference abstract class and interface?
Explain what is meant by polymorphism?
What is the function of messaging metaphor?
What if we make the method as abstract in another interface?
What is the use if instanceof keyword? And how do refer to a current instance of object?