OOP Principles

OOP is not only about creating classes.

The useful part is learning how to organize behavior, protect data, hide complexity, and swap implementations safely.

The main principles are:

• Encapsulation
• Abstraction
• Polymorphism
• Inheritance

What comes under OOP Principles?

OOP Principles
├── Encapsulation
├── Abstraction
├── Polymorphism
└── Inheritance

Learn them in this order. Encapsulation and abstraction explain how objects hide detail. Polymorphism and inheritance explain how behavior can vary across types.