README.md

🎓 Mastering Java OOP: Classes and Inheritance

📚 What is Covered?

This module covers the core concepts of Object-Oriented Programming (OOP) in Java, specifically focusing on Classes, Constructors, Inheritance, and String handling.

• Classes and Objects: Understanding the blueprint vs. the instance, fields, and methods.
• Encapsulation: Using Getters and Setters to protect data.
• Constructors: Initialization, Constructor Chaining, and the this() and super() calls.
• POJOs and Records: Traditional Plain Old Java Objects vs. the modern Java Records.
• Inheritance: Extending classes, overriding methods, and the java.lang.Object hierarchy.
• String Handling: String immutability, formatting (including Text Blocks), and the StringBuilder class.

🏗️ Project Structure

The project is organized into several subfolders, each focusing on a specific topic:

• classes-constructors/:
  • Classes: Introduction to class definitions and objects.
  • BankAccount: Practice with fields, methods, and encapsulation.
  • CustomerData: Deep dive into constructors and constructor chaining.
  • Records: Exploring the modern Record type in Java.
• inheritance/:
  • Inheritance: Basics of class extension (Animal, Dog, Fish).
  • TheObjectClass: Understanding the root of the Java class hierarchy.
• text-strings/:
  • AllAboutStrings: String methods and manipulation.
  • StringFormatting: Formatting output and using Text Blocks.
  • StringOptions: Efficient string building with StringBuilder.
• challenges/:
  • InheritanceChallenge: A comprehensive challenge to design a worker hierarchy using inheritance.
  • CylinderCircleInheritance: Inheritance challenge involving Circles and Cylinders.
  • CuboidPoolAreaCalculation: Practice with rectangle and cuboid inheritance for area and volume calculations.