Unveiling the Four Pillars of Object-Oriented Programming in Java

Introduction:

Welcome to the world of Object-Oriented Programming (OOP) in Java, where the synergy of encapsulation, inheritance, polymorphism, and abstraction forms the foundation of robust and efficient software development. In this article, we’ll dive deep into each of the four pillars of OOP in Java, providing comprehensive explanations and practical code examples to help you master this fundamental paradigm.

Table of Contents:

Encapsulation: The Building Block of Secure and Modular Code
Inheritance: Reusing and Extending Code for Greater Flexibility
Polymorphism: Unleashing the Power of Multiple Forms
Abstraction: Simplifying Complexity and Enhancing Maintainability
Conclusion: Embracing the Power of OOP in Java

Section 1: Encapsulation: The Building Block of Secure and Modular Code

Encapsulation serves as the cornerstone of object-oriented programming by combining data and methods into a single unit known as an object. Through encapsulation, we achieve data hiding, which safeguards sensitive information and ensures that it can only be accessed through well-defined methods. Let’s explore an example to understand the concept better:

public class BankAccount {
    private double balance;

    public void deposit(double amount) {
        // Code to deposit the specified…