Building a Java Library Management System with JUnit Testing

Learning Java is most effective when you apply your knowledge to real-world scenarios. Building a practical application from scratch helps you bridge the gap between syntax and software design. In this text-based course, you will design and implement a complete Library Management System using Java. You will learn how to structure data models, manage application state, and write robust unit tests using JUnit to ensure your application runs flawlessly. What you'll learn: Understand core Object-Oriented Programming (OOP) principles and Java POJOs (Plain Old Java Objects); Design a relational data model in code to manage books, members, and transactions; Write clean, modular Java code using modern practices like local variable type inference and robust exception handling; Implement unit testing with JUnit to verify your application logic and prevent bugs; Structure your project directory and manage dependencies using standard build tool conventions. You will start by mastering foundational Java concepts and system design terminology before moving step-by-step through coding the domain models, writing business logic, and implementing unit tests. This course is designed for beginners who have a basic understanding of Java syntax and want to learn how to build and test structured applications. No advanced testing or software design experience is required. Start reading today to build your first fully tested Java application.