Table of Contents

1. Introduction to OOP
2. Classes and Objects
3. Constructors
4. Encapsulation
5. Inheritance
6. Polymorphism
7. Abstraction
8. Interfaces
9. Association, Aggregation, and Composition
10. Method Overloading & Overriding
11. Packages
12. Advanced Topics (SOLID Principles)

1. Introduction to OOP

Object-Oriented Programming is a programming paradigm that organizes code into objects (instances of classes) to model real-world entities. Key principles:

• Encapsulation: Hiding data and exposing functionality.
• Inheritance: Reusing code via parent-child relationships.
• Polymorphism: One interface, multiple implementations.