Dive into the world of modern Java application development with this comprehensive course on testing and building REST APIs using Spring Boot. Learn to master JUnit and Mockito to create robust, reliable, and maintainable unit tests. Gain practical insights into setting up and optimizing build tools like Maven and Gradle, and discover how these tools enhance project management and dependency handling. Starting with foundational concepts, you'll explore JUnit and Mockito in-depth, learning how to write efficient tests and leverage annotations to simplify your workflow. Transition seamlessly into using Maven and Gradle for dependency management, while understanding the lifecycle and structure of these tools in Spring Boot projects. The course culminates in an extensive deep dive into REST API development with Spring Boot. From creating simple resources to implementing complex operations and best practices, you'll build a fully functional REST API. You鈥檒l also explore integration and unit testing, security configuration, and advanced topics like Mock MVC and Spring Security. This course is perfect for Java developers looking to enhance their skills in testing and REST API development. Prior knowledge of Java and basic Spring Boot concepts is recommended. Whether you're an intermediate learner or an advanced developer, you'll find valuable takeaways to improve your projects.