What is the difference between an abstract class and interface in java?
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What is constructor and virtual function? Can we call virtual funciton in a constructor?
What are the various types of constructors?
Can an interface inherit from another interface?
Why use oops?
Can encapsulation be called as a security device?
Can link and Association applied interchangeably?
What are the methods required to create changes in subclasses?
What is the use of finalize method?
What is difference between encapsulation and abstraction?
Difference: Sequence Diagrams, Collaboration Diagrams ?
Do we require a parameter for constructors?
What is the use if instanceof keyword? And how do refer to a current instance of object?