Comparing Class Implementations in Java

Designing robust classes is a foundational skill for any object-oriented programmer, but understanding how different structural choices impact your code is where true mastery begins. This text-based course guides you through the process of creating and analyzing multiple Java class implementations for representing squares, helping you understand the trade-offs of different design decisions. You will learn how to structure data fields, write clean constructors, and implement essential geometric methods. By comparing different approaches side-by-side, you will gain a deeper understanding of encapsulation, object state, and code reuse. What you'll learn: Understand foundational object-oriented programming concepts and class syntax in Java; Design multiple class implementations for square objects using different internal data fields; Create robust constructors to initialize object state and prevent invalid data; Implement methods to calculate geometric properties like area and perimeter; Practice comparing different class designs to evaluate code readability, efficiency, and flexibility; Apply modern Java features like records and basic unit testing with JUnit to verify class behavior. The course starts with essential object-oriented terminology and basic class structures before moving into practical design comparisons and hands-on refactoring exercises. This course is designed for beginner Java programmers who want to move beyond basic syntax and learn how to write clean, maintainable object-oriented code. No advanced programming experience is required. Start building better Java classes today.