Spring Boot 4 Explained 🚀 | What Changed in Framework 7?

Spring Boot 4 is finally here 🚀 But what exactly changed under the hood? In this video, we break down what’s new in Spring Boot 4 by looking directly at the changes introduced in Spring Framework 7. Instead of jumping straight into Spring Boot, we start from a raw Spring MVC application, understand the fundamentals, and then migrate step-by-step to Spring Boot 4. For More free/paid courses visit www.seleniumexpress.com Timestamp ------------------- 00:00 – Spring Framework 7 Overview 01:39 – Java 17 or Java 25? (Baseline Explained) 02:57 – Building a Spring MVC Project in IntelliJ 04:41 – Spring Web MVC 7, JSpecify & Commons Logging 04:57 – JUnit 6 Explained (JUnit Platform & Jupiter) 06:32 – Why Tomcat 11? 11:49 – Setting Up DispatcherServlet (Front Controller) 14:02 – Spring Web XML-Based Configuration 23:24 – Spring Web Java-Based Configuration 26:35 – Servlet 6.1 Explained 28:26 – Upgrading to Spring Boot 4 35:31 – Deploying Spring Boot App on Jetty 40:49 – Why Undertow Support Is Removed 44:44 – RestTemplate Discouraged → Use RestClient You’ll clearly see: How Spring Boot 4 builds on Spring Framework 7 Why Java 17 is still the baseline What Servlet 6.1 means for your applications Why Tomcat 11 and Jetty 12.1 are supported Why Undertow support is removed in Spring Boot 4 How XML configuration fits into the picture today How Java-based configuration and auto-configuration evolved How Spring Boot auto-creates the DispatcherServlet What changes when switching between Tomcat, Jetty, and Undertow Why RestTemplate is discouraged and what comes next How JUnit works behind the scenes in Spring Boot 4 This is not just a feature list — it’s a practical migration-focused explanation to help you understand what changed, why it changed, and what you need to upgrade when moving to Spring Boot 4. If you’re: Upgrading from Spring Boot 2.x or 3.x Maintaining legacy Spring MVC applications Curious about Spring Framework 7 internals Planning new projects with Spring Boot 4 This video will give you the right mental model before you write any code. #springboot4 #springboottutorial #springframework7 🎓 Related Courses – For reference 📘 Java Streams & Lambda Expressions    • Stream API in Java : Foundation |  Java 8   ⚡ Reactive Java with Project Reactor    • Reactive Programming 01 - Java Stream Vs R...   🔁 Generics in Java Explained    • From Beginner to Expert:  Why Java Generic...   🌐 Spring Boot Crash Course    • Spring Vs Spring Boot - Why Spring Boot ? ...   ▶️ Spring Boot Microservices    • What the heck is Spring Cloud ? An Introdu...   ▶️ Apache Kafka Essentials    • Apache Kafka Tutorial for Beginners - Setu...   ▶️ Spring Bootcamp (FREE)    • Spring Framework 6 - project setup | Sprin...   ▶️ Spring Live Mock Interview    • Java interview questions and answers for e...   Feel free to ask for support. Email me at [email protected] For More free/paid courses visit www.seleniumexpress.com Facebook   / seleniumexpress   Facebook support Group “SeleniumExpress - Support"   / 187000222361579   Follow me on Insta   / selenium_express   🔔 Subscribe for More