Spring Boot 4 for Beginners: Build Modern Java REST APIs with Security, JWT, Docker, and AI

Learn Spring Boot 4 the practical way-by building real-world Java applications from the ground up. If you're ready to master one of the most in-demand Java frameworks, Spring Boot 4 for Beginners is your step-by-step guide to building modern backend applications with confidence. Whether you're a complete beginner, a Java developer transitioning to Spring Boot, or a computer science student preparing for a career in software development, this book provides the practical knowledge and hands-on experience you need. Instead of overwhelming you with theory, you'll build real projects while learning the concepts that professional developers use every day. Inside this book, you'll learn how to: Set up a complete Spring Boot 4 development environment Understand Dependency Injection, Inversion of Control (IoC), and Spring Beans Build RESTful APIs using Spring Boot Work with Spring Data JPA and relational databases Validate user input and handle exceptions professionally Secure applications with Spring Security and JWT Authentication Test your applications using JUnit, MockMvc, and integration testing Document APIs with OpenAPI (Swagger) Containerise applications using Docker and Docker Compose Deploy production-ready Spring Boot applications Apply clean architecture, DTOs, logging, configuration management, and performance best practices Use ChatGPT responsibly to learn faster, generate boilerplate code, debug errors, write tests, refactor code, and improve documentation By the end of the book, you'll have built a complete Course Enrollment Management System that demonstrates modern Spring Boot development from start to finish. This book is perfect for: - Java beginners learning Spring Boot - College and university students - Self-taught developers - Backend developers - Junior Java developers - Career changers entering software development - Anyone preparing for Spring Boot interviews No prior Spring Boot experience is required. If you understand basic Java, this book will guide you through building secure, production-ready backend applications using today's best practices. Build practical skills. Write better code. Launch real Spring Boot applications with confidence.