What are the four pillars of OOPS? Explain with a real-world example.

Question

Accepted Answer

The four pillars of OOP are encapsulation, inheritance, polymorphism, and abstraction, essential for building robust software.

Encapsulation: Bundling data and methods that operate on the data within a single unit (class). Example: A 'Car' class with properties like 'speed' and methods like 'accelerate()'.
Inheritance: Mechanism where a new class inherits properties and methods from an existing class. Example: A 'SportsCar' class inheriting from the 'Car' class.
Polymorphism: Ability to present the same interface for different underlying data types. Example: A method 'draw()' that behaves differently for 'Circle' and 'Square' classes.
Abstraction: Hiding complex implementation details and showing only the essential features. Example: A 'Payment' interface that defines methods like 'processPayment()' without revealing the underlying payment processing logic.

Accepted Answer

1) Encapsulation

2) Inheritance

3) Polymorphism

4) Abstraction

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