Mattias Karlsson
@matkar.bsky.social
Jfokus founder, Java Champion, JUG leader, Software Vagabond, Family father, Motorcyclist & Kiva supporter. Check out @jfokus.bsky.social
Great to see so many familiar faces, and new, yesterday for the first Jforum of the season! Cinema night with The Java Story. Some of us even spotted our very own Mattias Karlsson in the movie 😎 A big thank you to Cult.Repo for sharing the story with our community. ❤️ See you soon at the next Jforum!
Looking forward to being part of the @jfokus.se 20 years anniversary edition 🤩!!! I am honored to speak at such event about #Java performance and running machine learning models on GPU 💪! Checkout all the cool topics and grab your ticket (limited availability) 🥳!!! jfokus.se/schedule.html
Jfokus Developers Conference
Sweden's largest developer conference focusing on Java, AI/ML, DevOps, and emerging technologies.
jfokus.se
Looking forward to speaking at @jfokus.se 2026! I’ll be presenting “Level Up Your Java Streams with Gatherers” and show how gatherers can make your Java streams even more powerful. 📆 Feb 2–4 📍 Stockholm 🇸🇪 www.jfokus.se/talks.html?s... Rumor has it there are still some tickets available 👀
I'm really looking forward to @jfokus.se which is coming up soon! It's always a great conference and you might still be able to find tickets so you can join @fniephaus.com and me as we sail our longship to the mysterious lands of #WebAssembly and @graalvm.org.
@jfokus.se is BACK for its 20th year and I’m so happy to be hosting a workshop on open source models & how to scale them up on #Kubernetes! We’ll feature projects including #vLLM + @langchain4j.dev + @promptfoo.bsky.social and more for enterprise AI deployment, app dev, and testing 🔥
🎃 Don’t fear the code! Join #Jforum tonight with @hansolo.eu and Ove Lindström at DF Kompetens - talks on dependency hell & dead code 👻 Register here: jforum.confetti.events/jforum-125-m... #community #developer #meetup
🧵 Virtual Threads, Structured Concurrency & Scoped Values: Putting it all together with @balarawool.bsky.social (ING Bank). Master the threads of Java’s new era ⚡ 👉 www.jfokus.se #Jfokus #DeveloperConference #Java #VirtualThreads #ProjectLoom #Concurrency #SpringBoot
Loved the discussion with Fredrik at @podsnack.se
Kodsnack@podsnack.se · last yr.Meetups - bäst utan Meetup? Javaforums och @jfokus.se @matkar.bsky.social förklarar - tjänsten kanske inte riktigt är vad den en gång var längre. Ett utdrag ur Kodsnack 664 - lyssna där poddar finns eller på kodsnack.se #podcast #meetups #konferenser
🎧 From Javaforum to Sweden’s biggest developer conference! In this Kodsnack episode, Jfokus founder @matkar.bsky.social talks about the journey, lessons from organizing events and tips for aspiring speakers. 🇸🇪 👉 Listen (in Swedish): kodsnack.se/664/ 🔗 www.jfokus.se #Jfokus #DeveloperConference
Kodsnack 664 - På neutral plats, med Mattias Karlsson
Fredrik snackar med Mattias Karlsson om Javaforums och Jfokus historia och nutid. Hur blir man plötsligt arrangör för en stor årlig konferens på bara 18 år? Mattias berättar om Javaforums historia och...
kodsnack.se
#DevoxxBE morning run with the @vaadin.com and @jfokus.se team. We are missing @theguywiththeduketattoo.com #community #runningWithJakartaEE
Check out this newsletter!
Sharat (Shar) Chander - 🟦🌊@sharatchander.bsky.social · last yr.#Java peers: Did you miss the September edition of the Java Newsletter? Content includes: ☕️ #Java25 release ☕️ Lifetime achievement interviews w/ @venkats.bsky.social @heinzkabutz.com @trishagee.bsky.social @matkar.bsky.social @horstmann.com @brjavaman.bsky.social ☕ and more! ➡️ tinyurl.com/mpswsd3e
🚀 Deep Dive Monday at #Jfokus — Building AI Agents with Spring & MCP with James Ward & Josh Long. Learn to build RAG-ready, production-grade AI agents with Spring — fast & efficient. ⚡ www.jfokus.se #DeveloperConference #AI #SpringBoot #MCP #RAG #Java #Agents
Hear, hear ..
Tom Cools@tomcools.be · last yr.Been reviewing submissions for @jfokus.se and while I've seen a lot of great talks pass by, I can't shake the feeling there are some viewpoints missing. 😉 So don't hold back your quirky, silly, weird or serious ideas for talks and submit them anyway! sessionize.com/jfokus-2026.
Conversation with @matkar.bsky.social who was a recipient of the Java Community Lifetime Achievement recognition at Jfokus in 2024 by @sharatchander.bsky.social dukescorner.libsyn.com/site/mattias...
Duke's Corner: Mattias Karlsson: I think it's Brilliant
Jim Grisanzio from Oracle Java Developer Relations talks with Mattias Karlsson, Java Champion and prominent developer in the Java community who was also honored with the Java Community Lifetime Achiev...
dukescorner.libsyn.com
Generative AI can boost dev productivity ⚡— but scaling it safely is another story. At AI-fokus 2024, Moderne showed how to design reliable workflows with OpenRewrite, validation, and context-aware tools. Watch here 👉 youtu.be/ezkp0EI7AFo?... #AIfokus #GenerativeAI #DevTools
Trusting AI to Modernize Software at Scale by Tim te Beek
YouTube video by Jfokus
youtu.be
Looking back at our brilliant Jfokus 2025 speakers ✨ Who will take the stage in 2026? 👉 CfS is open now! www.jfokus.se/iamahero
#Java peers, we have an amazing speaker line-up at #JavaOne 2025 including @jeanneboyarsky.bsky.social @frankgreco.bsky.social @lizeraes.bsky.social @mayers.io @matkar.bsky.social @venkats.bsky.social @brianvermeer.nl @maritvandijk.bsky.social . Register with J1D100_SM, save $100! javaone.com
Bring the goodies ;-)
Simon Ritter@speakjava.bsky.social · 2y agoI've started work on my "30 Years of Java" talk for @jfokus.se, and it's proving to be a lot of fun. I just showed my son the Java ring and explained it had a computer in it. He did not seem convinced 😀 I've also got my PalmPilot up and running for the KVM and even a Livescribe Pulse smartpen.
#Java peers, #JavaOne 2025 early bird reg ends on Feb 10. Sign up & save $100. Hear from Java luminaries such as @venkats.bsky.social @danvega.dev @starbuxman.joshlong.com @maritvandijk.bsky.social @malagupta.bsky.social @matkar.bsky.social @richard.fichtner.dev Register here social.ora.cl/6018QnuQp
Today I started with winter running for the first time...
Closing 2024 with a leap of fait. Jump into 2025 with some fear, but hope for the best. Fear Less, Live More. Happy New Year!
