The initial introduction of the null safety support in Spring dates back to 2017 and the release of Spring Framework 5.0. In 2025, we are evolving that story to bring more added value for Spring developers, either in Java or Kotlin. But before having a deeper look to the changes we are working on, let me explain why we do that and what are the expected benefits.

What problem do we try to solve?

Let's take a concrete example, and say we are using a library that provides a TokenExtractor interface defined as follow:

Copyinterface TokenExtractor {
    
    /**
     * Extract a token from a {@link…

Hi, Spring fans! In this installment I talk to Johannes Bechberger, Java engineer working on profilers and their underlying technology in the SapMachine team at SAP. His work today comprises many open-source contributions and his blog, where he regularly writes on in-depth profiling and debugging topics. He also works on hello-ebpf, the first eBPF library for Java.

NB: you can find the working code for this blog here

There's a new release of the amazing—if experimental—Spring gRPC project: version 0.4.0. I won't get into the nitty-gritty of all that's new, but I just wanted to highlight how elated I am to use it and walk you through the step-by-step path to gRPC joy. A million little things fall into place to make it the smoothest experience I've ever had using gRPC!

I went to the Spring Initializr and selected GRPC, GraalVM, and Web. I'm a Maven enjoyer, but you do you. I chose Java 23, 'natch, since Java 24 is coming in a week or two. I figured this…

Hi, Spring fans! Welcome to another installment of This Week in Spring, and Happy Devnexus 2025 to those who celebrate! That's right sports fans, I'm off to awesome Atlanta, Georgia later today for Devnexus, one of the world's largest annual gatherings of Java community and luminaries alike. I'll be doing a talk on the latest-and-greatest in Spring Boot as well as another talk looking at Spring AI with the legendary Dr. Mark Pollack, founder of Spring AI. And, of course, I'll be soaking up all the other talks by Spring luminaries like Glenn Renfro, Jonatan Ivanov, Ken Kousen, Ryan Baxter…

Hi, Spring fans, and welcome to another rip-roarin' installment of This Week in Spring! Later today I'll board a plane for magnificent Montreal, Canada for the amazing Confoo conference! I'm super excited!

• Good news everybody! Spring Boot 3.5.0-M2 is now available!
• In last week's installment of the Bootiful Podcast, I talked to BellSoft's Catherine Edelveis
• Spring Boot 3.4.3 is available now
• Spring Boot 3.3.9 available now
• Spring AMQP 4.0 M1 available
• Spring for Apache Kafka 3.3.3 and 3.2.7 are now available
• Spring Integration 6.5 Milestone 2 available now
• Spring Authorization Server 1.5.0-M1, 1.4.2, and 1.3.5 are available now
• Using RAG and VectorStore in Spring AI
• Accelerate Spring AI Development with effortless privacy from CodeGate
…

Hi, Spring and JDK fans! In this week's episode I talk to BellSoft developer advocate Catherine Edelveis

#java #springboot #jre #jdk #graalvm #CRaC

Hi, Spring fans! It's the week of February 18th, 2025, and you know what that means? ConFoo and Devnexus are nearly here! Next week, I'll be traveling to amazing Montreal, Canada, to speak at the ConFoo show for an amazing community, poutine, and technology! Then, a few days later, it's off to awesome Atlanta, Georgia, where I'll be doing a workshop, a talk on Spring AI with Dr. Mark Pollack, and my usual Spring Boot latest-and-greatest talk. If you're going to either of those shows (why not both?), please don't hesitate to say "salut" or "hello"!

There's a lot of great stuff in this week's…

Hi, Spring fans! In today's installment, I talk to Spring legend Glenn Renfro.

Hi, Spring fans! In this installment I talk to Spring Boot and Spring Initializr legend Moritz Halbritter