Explain the core concepts of Object-Oriented Programming (OOP).

Question

Accepted Answer

OOP concepts include encapsulation, inheritance, polymorphism, and abstraction, forming the foundation of object-oriented programming.

Encapsulation: Bundling data and methods in a class. Example: A class 'Car' with properties like 'speed' and methods like 'accelerate()'.
Inheritance: Deriving new classes from existing ones. Example: 'ElectricCar' inherits from 'Car', adding features like 'batteryCapacity'.
Polymorphism: Ability to use a single interface for different data types. Example: A method 'draw()' can be used for both 'Circle' and 'Square' classes.
Abstraction: Hiding complex implementation details. Example: A 'Payment' interface with methods like 'processPayment()' without revealing the payment logic.

Interview Questions Asked to Software Developer at Other Companies