This week, @boredabdel.bsky.social and I will find out. We'll build a Marathon Tracking App with: 🏃 GPX uploads 🗺️ OpenStreetMap 📈 Pace & elevation charts Using Antigravity CLI, Java, @Quarkus.io and @Vaadin.com Live. From scratch.
Marcus Hellberg
@marcushellberg.dev
Applied AI Researcher, Speaker, DevRel expert. Java Champion. VP of AI Research @vaadin.com
This is cool! There's now a Vaadin Aura theme preset gallery and theme builder: vaadin.github.io/web-compone... 🎉 The functionality will also be available in Vaadin Copilot shortly!
Vaadin 25.1 is out. Despite it's minor version bump, it comes loaded with some big features 🤩 Want to learn more and ask the team questions? Join our live stream in 15 minutes: www.youtube.com/watch?v=7gV...
Vaadin 25.1 Release Livestream
Join us live to celebrate the Vaadin 25.1 release. Packed with practical demos and insights, this session will be a great opportunity to ask questions from V...
youtube.com
Vaadin 25.1 is out! 🥳 Signals for reactive UI state management is the biggest update to our Java API since Vaadin 10 (but this time without breaking changes)! Other goodies: 🧑✈️ Copilot is free 🧪 Browserless UI testing is now free 🤖 New AI chat components vaadin.com/blog/vaadin...
Vaadin 25.1: Free Copilot and production-ready Signals | Vaadin
Vaadin 25.1 makes Copilot free, brings production-ready Signals, open-sources browserless UI testing, and adds new components and AI integration APIs.
vaadin.com
In the upcoming Vaadin 25.1 release, browserless UI tests will be part of our free offering — Apache 2.0 licensed, just like the core framework. Test component state, events, routing, and UI logic directly inside the JVM. 🔗 Learn more on the blog: vaadin.com/blog/browser...
Browserless UI Tests Join Vaadin’s Free Offering in 25.1 | Vaadin
In Vaadin 25.1, browserless UI tests become free. Validate UI logic directly in the JVM and ship faster with stable, scalable testing.
vaadin.com
Getting ready for our long Viking boat trip to @Jfokus.se with a proper Viking feast with the @vaadin.com gang, @starbuxman.joshlong.com, @gAmUssA.dev and @jbaru.ch 🥳
Last year was still busy with talks 💪 This year will be fewer talks as I'm focusing more on my new VP of Products role. But I'll still try to speak at a few key events a year 🤞
Vaadin 25.0 has landed! 🛬 ✨ New "Aura" theme & native CSS styling ☕ #Java 21 + Spring Boot 4 support 🚀 50% faster dev-mode startup 📦 Production-ready builds by default 📉 30% fewer dependencies Stop fighting the framework and start building. Check it out: vaadin.com/blog/vaadin-...
Vaadin 25.0: simplified styling, leaner frontend, and key updates | Vaadin
Explore what’s new in Vaadin 25.0: simplified styling, a leaner frontend, smoother production builds, and practical updates for daily development.
vaadin.com
Some nice CSS simplifications in Vaadin 25: CSS is just CSS now, no need for any Vaadin specific theme config. New Aura theme. Automatic light/dark color scheme support.
Ever wondered how Quarkus builds its Dev UI? It’s Vaadin under the hood — and it’s actually great for building your own apps too. I wrote a full hands-on tutorial showing how to build a clean task manager UI using #Vaadin Flow + #Quarkus, all in pure #Java. Zero JavaScript drama. buff.ly/fcMQX9x
Today's #JCON Content Board Spotlight: Marcus Hellberg (Vaadin) Another #JavaChampion within our board who has over 20 years of experience in combining modern web technologies and #Java Whether hiking or exploring the next AI integration, he's fully committed. Join #JCON2026 2026.europe.jcon.one
🟦 Full-stack Web Apps, 100% Java with Marcus Hellberg (Vaadin). One language. One stack. As Odin intended ⚡ 👉 www.jfokus.se #Jfokus #DeveloperConference #Java #Vaadin #SpringBoot #Fullstack #WebDevelopment
Excited to speak at @Jfokus.se in February. Really love my Norse god avatar, I think it really highlights my luscious locks of hair 😂 www.jfokus.se/speakers.ht...
Today and tomorrow, I'm giving a Vaadin workshop for a client team in Greece. Vaadin is the easiest way to build great web applications in Java. Interested? I do Vaadin workshops worldwide, either online or, upon request, on-site for your team. martinelli.ch/training/vaa...
I created a new Vaadin AI starter that gives you a great starting point for building AI-powered apps. It includes: 💬 Streaming chat interface with Open AI 🔧 MCP support ☕ Java tool calling, local and REST → github.com/marcushellb...
GitHub - marcushellberg/vaadin-ai-starter
Contribute to marcushellberg/vaadin-ai-starter development by creating an account on GitHub.
github.com
Does anyone have a functioning example with @spring-ai.bsky.social and an HTTP MCP server? I've been going round in circles for an hour reading docs and examples, but still can't get it working 🤔
👾Vaadin Tutorial for Beginners: Beautiful UIs in Pure Java My new step-by-step tutorial on using @vaadin.com with #SpringBoot to build awesome UIs. Create a login page, filtered search, and update form in just 15 minutes. No HTML or JS needed! youtu.be/67oJxPRa3Mg
Vaadin Tutorial: From Spring Boot to Beautiful UI Fast
YouTube video by CyberJAR
youtu.be
Are you a Vaadin developer using AI coding tools? Stop everything you're doing and add the new Vaadin MCP server to your setup before continuing! 🚀 mcp.vaadin.com/docs/
What an absolute treat to have my friend @starbuxman join Vaadin Create to do fast-paced, funny, and information-packed speedrun of all the exciting new features coming in Spring Boot 4 and @spring.io 7!
So close… My flight from Orlando was late and I just caught a glimpse of my connection to Helsinki as it pulled out of the gate 😭
🍃 Real-World AI Patterns with Spring AI and Vaadin by @marcushellberg.dev / @thomasvitale.com @ Spring I/O 2025 ▶️ Video: youtu.be/cLWFu33kM3E 🔗 Slides: speakerdeck.com/thomasvitale... #springio25
Real-World AI Patterns with Spring AI and Vaadin by Marcus Hellberg / Thomas Vitale @ Spring I/O 25
YouTube video by Spring I/O
youtu.be
Should we have a higher-level AI chat component in @vaadin.com that handles attachments, streaming, message history? You could register #SpringAI tools, advisors to it to expand its functionality. Full code for the demo below: new AiChat(OpenAiChatModel.class)
#Java fanatics come together! Pack your bags (and your #JVM) for #JCONUSA25 at #IBM #TechXchange in sunny Orlando, Florida (Oct 6–9)! Meet Java #Champions learn futuristic #tech and #geek out with fellow #devs 🌴☕ Discounted until the end of August 👉 usa.jcon.one/register #JCON #JCON2025
The @vaadin WTF summit is happening! (The only logical name for a workshop spanning Wednesday, Thursday, and Friday)
Regular registration is now open for @dev2next.bsky.social 2025 www.dev2next.com/4/news
dev2next Conference
dev2next.com
My weekly AI news roundup by ChatGPT is exceptionally insightful this week
