Spring Boot 4 Tutorial - Learn Spring Boot in 30 Minutes

Learn Spring Boot 4 in just 30 minutes with this fast, practical crash course. In this tutorial, you’ll explore the newest features in Spring Boot 4, build a real REST API, learn API versioning, register beans using the new API, call external APIs with @HttpExchange, and use built-in resilience features all from scratch. 🖥️ Buy the RD320UA monitor for programmers here - https://bit.ly/3JDyHLF Spring Boot 4 brings major improvements like: - Java 25 support + Java 17 compatibility - Modularized codebase with smaller, focused JARs - JSpecify null-safety across the portfolio - First-class API versioning - New HTTP Service Clients (@HttpExchange, @GetExchange) - Modern bean registration API - Virtual thread support - Built-in resilience and retry mechanisms ⭐ Table Of Contents ⭐ =========================================== 00:00 Introduction & What's New in Spring Boot 4 01:35 BenQ Monitor for Developers 03:21 Spring Initializr Overview 04:36 Creating a Spring Boot 4 Project in IntelliJ 07:20 Building a Student REST API 09:32 Testing Endpoints with IntelliJ HTTP Client 09:59 Adding Versioned Routes (/api/v1) 10:33 Spring Boot 4 API Versioning Explained 14:17 New Bean Registration API 17:08 Dynamic Bean Selection with Environment 19:23 Importing Bean Registrar 19:42 Calling External APIs with @HttpExchange 22:29 Using @GetExchange for HTTP Methods 23:53 Creating PostController 24:57 Testing External API Calls 25:27 Using Resilience & Retry Methods 28:06 Final Thoughts & Outro P.S =========================================== 💯 Don't forget to subscribe | http://bit.ly/2HpF5V8 💯 Join Private Facebook Group and Discord - https://amigoscode.com/p/join-community 💯 Follow me on Instagram | http://bit.ly/2TSkA9w ❤️ Thanks for watching #java #springboot #programming