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Chapter 7: Object-Oriented Programming (OOP) in Java Chapter 7: Object-Oriented Programming (OOP) in Java Java is a powerful object-oriented programming language. It emphasizes designing programs using real-world entities like objects and classes. OOP helps create modular, maintainable, reusable, and scalable software systems. 🔹 Four Main Principles of OOP Encapsulation Inheritance Polymorphism Abstraction 🛡️ 1. Encapsulation in Java Encapsulation is the concept of wrapping data (variables) and methods (code) into a single unit called a class. It helps hide the internal implementation of the object from the outside world. Example: class Person { private String name; private int age; public void setName(String name) { this.name = name; } public String getName() { return name; } } Benefits: Data hiding, code maintainability, security, and flexibility. 🧬 2. Inheritance in Java ...

Chapter 8: Inheritance, Polymorphism & Abstraction in Java Chapter 8: Inheritance, Polymorphism & Abstraction in Java Introduction to Object-Oriented Programming Principles Java is a pure object-oriented programming language, meaning it is based on the principles of modeling real-world entities as objects. Among the four core pillars of OOP—Encapsulation, Inheritance, Polymorphism, and Abstraction—this chapter dives deep into three essential concepts: Inheritance Polymorphism Abstraction 1. Inheritance in Java What is Inheritance? Inheritance is the process where one class (child/subclass) acquires the properties and behaviors (methods and variables) of another class (parent/superclass). class Animal { void eat() { System.out.println("This animal eats food."); } } class Dog extends Animal { void bark() { System.out.println("Dog barks."); ...