Java Test-Driven Development (TDD) and Clean Architecture

Writing reliable software requires more than just coding; it demands a structured approach to design and verification. Test-Driven Development (TDD) changes how you build software by putting tests first, ensuring your Java applications are robust, flexible, and easy to maintain from day one. Through this text-based course, you will transition from basic Java programming to professional software craftsmanship. You will learn how to write clean, self-documenting code that reduces bugs and simplifies future updates, giving you the confidence to deploy to production with ease. What you'll learn: - Understand the core cycle of Red-Green-Refactor to guide your daily Java development. - Apply modern testing tools like JUnit 5 and Mockito to isolate and verify your code behavior. - Implement SOLID design principles to create decoupled, highly maintainable Java systems. - Explore hexagonal architecture concepts to separate your core business logic from external databases and APIs. - Practice writing unit tests for modern Java features, including records and streams. - Refactor existing code safely using structured, step-by-step testing strategies. The course begins with essential testing terminology and foundational concepts before advancing to practical design patterns. You will progress through clear, written explanations and structured code analysis that demonstrate how to structure real-world Java applications. This course is designed for beginner to intermediate Java developers who want to adopt professional testing standards. No prior experience with TDD or automated testing is required. Start reading today to elevate your Java development workflow and build software that lasts.