Object-Oriented Java: Build a Product Catalog Backend

Building scalable software starts with solid object-oriented design. If you want to move beyond basic scripts and learn how real-world Java applications are structured, understanding how to model real-world entities is your essential next step. This course guides you through the process of designing a robust backend system for a digital product catalog using modern Java development practices. By reading through clear explanations and analyzing structured code examples, you will learn how to partition your code across multiple files, protect data integrity, and establish clear relationships between objects. You will transition from writing simple code blocks to architecting clean, maintainable, and modular Java programs. What you'll learn: - Understand core object-oriented principles including encapsulation, classes, and instances - Create custom product classes with private fields, constructors, and public getter and setter methods - Configure relationships between different objects to represent a realistic catalog structure - Apply modern Java features such as record types and type hints for cleaner data modeling - Organize your application architecture across multiple source files for better maintainability - Practice writing clean, readable Java code that adheres to industry-standard naming conventions We begin with foundational concepts, defining exactly what classes and objects are and how they interact. From there, you will explore step-by-step how to construct a product catalog backend, learning how to restrict direct access to data and expose safe interfaces. Each concept is reinforced with clear text-based explanations and practical code snippets that you can read and analyze at your own pace. This course is designed for beginner Java programmers who understand basic syntax and loops but want to learn how to structure real applications. No advanced backend experience is required. Start reading today to master class design and build cleaner Java applications.