OOP Interview Questions

What are the four pillars of OOP? — spoken sample answer for Indian interviews.

What is encapsulation, and how is it different from abstraction? — spoken sample answer for Indian interviews.

What is the difference between inheritance and composition? When do you prefer composition? — spoken sample answer for Indian interviews.

What is cohesion and coupling? Why do they matter in interviews? — spoken sample answer for Indian interviews.

Explain polymorphism with a real example. What is the difference between overloading and overriding? — spoken sample answer for Indian interviews.

What is method hiding vs method overriding? — spoken sample answer for Indian interviews.

What are the SOLID principles? Give a one-line example of each — spoken sample answer for Indian interviews.

What is the difference between an abstract class and an interface? — spoken sample answer for Indian interviews.

What is the diamond problem, and how do Java and C# avoid it? — spoken sample answer for Indian interviews.

What is the difference between association, aggregation, and composition in UML/OOP? — spoken sample answer for Indian interviews.

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