Jfokus

🟨 SPEAKER DETECTED: Jörgen Andersson When cloud isn’t an option, how do you provide access to LLMs without losing control? Jörgen shares the architecture and lessons behind “Building a Secure Internal LLM Portal in Java”. jfokus.se #Jfokus

🟨 SPEAKER DETECTED: Fredrik Carleson Programming demands precise syntax. Human language gets its meaning from context. Can LLMs bridge the gap or have they simply learned to navigate our misunderstandings? “Did LLMs Solve Wittgenstein’s Language Problem?” jfokus.se #Jfokus

🟨 SPEAKER DETECTED: Gunnar Morling @gunnarmorling.dev Gunnar built Hardwood: a modern Java Parquet library focused on parallel decoding and high throughput, with a little help from AI. “Hardwood: Building a Parquet Library From Scratch (With a Little Help From AI)” jfokus.se #Jfokus

🟨 SPEAKER DETECTED: @rijosam.com Through game-like challenges and live coding, Rijo will explore how to make Java applications less dependent on their frameworks, without giving up their benefits. “Java Beyond Frameworks: Avoiding Lock-In with Agnostic Design” jfokus.se #Jfokus

🟨 SPEAKER DETECTED: Alexander Chatzizacharias @glycin.bsky.social Returns to Jfokus with an RTS game built around Git. Branches become timelines, history enables time travel and merge conflicts can happen between buildings. “Conquest, time travel and explosions using Git” jfokus.se #Jfokus

🟨 SPEAKER DETECTED: Joakim Eriksson Build a smart device, develop its ESP32 firmware with a coding agent, then connect it to an AI application. Hands-on lab: “AI Gets Physical” Hardware provided. No electronics experience needed. jfokus.se #Jfokus

🟨 SPEAKER DETECTED: Iryna Dohndorf How do you test an LLM when the same input can produce a different response? “Beyond assertEquals” explores Java-native probabilistic security and bias testing with Tiberius. www.jfokus.se #Jfokus

🟨 SPEAKER DETECTED: Tobias Modig Tests were green. The code looked fine. Then he dug deeper. “The Worst Code I’ve Ever Seen” explores why good developers write terrible code and what helps prevent it. www.jfokus.se #Jfokus

🟨 SPEAKER DETECTED: Daniel Raniz Raneland @raniz.se Will your architecture age like Rome or slide into a shantytown? Learn how DDD, Conway’s Law, test automation, cohesion and intentional slack can fight architectural rot. www.jfokus.se #Jfokus

🟨 SPEAKER DETECTED: Kevlin Henney @kevlin.bsky.social DRY, SOLID, Conway’s Law, Information Hiding. We quote them, but do we understand them? In “Principle Misunderstandings”, Kevlin takes familiar design advice apart to uncover what really matters. www.jfokus.se #Jfokus

🟨 SPEAKER DETECTED: Simon Martinelli @martinelli.ch What if the spec, not the prompt, became the source of truth? See Spec-Driven Development in action: generate, test and evolve code with AI agents. 90-minute deep dive at #Jfokus. www.jfokus.se

TWO-PLAYER MODE: Marit van Dijk + Piotr Przybyl @maritvandijk.bsky.social @piotrprz.bsky.social Modern Java, without the intimidation. Explore recent features and try them directly in your IDE. “Learning modern Java the playful way” www.jfokus.se #Java #Jfokus

SPEAKER DETECTED: Jonathan Vila @vilojona.bsky.social AI agents need seatbelts. Learn practical ways to tighten access, improve context and validation, and make AI code generation safer. “Agents With Seatbelts” www.jfokus.se #Jfokus

SPEAKER DETECTED: Maik Kingma Your agents call APIs, read databases and trigger workflows. But who are they acting for? Explore identity, authorization and traceability in this 90-minute deep dive. www.jfokus.se #agenticengineering #Jfokus

SPEAKER DETECTED: Dan Vega @danvega.dev Bring your laptop and build with Spring AI - from model abstraction and structured output to context engineering and tool calling. Hands-on lab: “Spring AI in Practice” www.jfokus.se #SpringAI #Jfokus

SPEAKER DETECTED: Barry O’Reilly From Turing and structured programming to agile, DDD and LLMs: discover the ideas that shaped how we build software. “The History of Software Architecture” www.jfokus.se #Jfokus

🚨 SPEAKER DETECTED: Lucía Conde Moreno A failing spaceship. One hour of oxygen. Can your AI copilot help save the crew? Join the hands-on lab “2027: A Spaceship Copilot Odyssey” at #Jfokus 2027, Deep Dive Monday Registration is open → www.jfokus.se

REGISTRATION IS NOW RUNNING. 🟨⬛ Registration for Jfokus 2027 is officially open! 🎤 The first speakers are online 📍 Stockholm Ready to join us? PRESS START → jfokus.se

🕹️ Ready for the next level? Jfokus 2027 registration opens TOMORROW! 1 October at 10:00 CEST Set your alarm and get ready to press START! Join us for #Jfokus 2027 at Stockholm Waterfront, 8–10 February 2027. 👉 www.jfokus.se

Registration opens in 2 days and we are publishing the first speakers www.jfokus.se

In three days, we start the next level. Registration for #Jfokus 2027 opens October 1 at 10:00 CEST. Limited number of Early Bird available at opening. Ready to press start? #developerconference #developercommunitystockholm

Jfokus 2027 is loading… Here’s a sneak peek at our new look. There’s more to reveal. For now, consider this your first glimpse of the next level. 📍 Stockholm | 8–10 February 2027 #Jfokus #Developerconference

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!

📣 Jfokus 2027 Call for Speakers is OPEN! Have something worth sharing with the developer community? We want to hear from you, first-time and experienced speakers welcome! 🎤 Submit your session 👉 sessionize.com/jfokus-2027/ #Jfokus #CallForSpeakers

Jfokus 2026 – Best Rated Talk #12 Tame your Llama, run AI in Java Lutske De Leeuw Run Llama models locally in Java. No ML PhD. No complex setup. Practical, code-first AI for real NLP and classification use cases. Watch the talk: www.youtube.com/watch?v=v4c6... #Jfokus #Java #AI #LLM

Which talks got the highest ratings at Jfokus 2026? We start publishing the list tomorrow. Three per week, based entirely on attendee feedback. #12 first. #Jfokus

Jfokus 2026 came alive in Stockholm — and what a week it was 🔥 Thank you to everyone who joined us. The talks, the energy, the community — that’s Jfokus. Recordings: www.jfokus.se/schedule Photos: sthlmeventfoto.pixieset.com/jfokus2026/

20 years of an amazing conference 🥳!!!! What an inspiring journey 🙏❣️ Congratulations to the community of @jfokus.se 🥳!!!!! #Java #community #conference

Very inspiring keynote about the best simple system for now @jfokus.se anniversary edition! #evolving #system #architecture

Don't miss this!

I’ll be speaking @jfokus.se 2026 about Project Loom. ☕️ 🧵There are so many awesome speakers and so many amazing talks/ workshops. 🧑‍💻👩‍💻 And only last few tickets left, so please hurry up and get yours at: jfokus.se/register.html

📍 @jfokus.se — 2 au 4/02, Stockholm Sponsor de cette conférence majeure de l’écosystème JVM. @lostinrandom.bsky.social présentera “MCP Servers Beyond 101”, sur les choix d’architecture et leurs impacts en production. www.jfokus.se

I can’t believe @jfokus.se is just a month away! 🇸🇪 This year is special because they are celebrating their 20th anniversary! 🎉 It’s going to be packed with Java Champions and JVM experts. Grab your ticket while you still can: 🔗 jfokus.se See you in Stockholm? ☕️ #Java #Jfokus #Jfokus2026 #JVM

🎨 The Renaissance Developer with Kevin Azijn & Adriaan de Jonge. Spec-driven, AI-powered development that helps Java devs build safer, faster, and better — without vibe coding. 👉 www.jfokus.se #Jfokus #DeveloperConference #Java #AI #Architecture #SpecDriven

🛡️ Beyond Code Generation: Governing AI Agents Across the DevSecOps Lifecycle with Mattias Söderberg. Master the guardrails, risks, and governance needed to adopt AI safely across your software pipeline ⚡ 👉 www.jfokus.se #Jfokus #DeveloperConference #AI #DevSecOps #Security #Governance #Agents

❄️ Only a few spots left! Join us for Jforum winter meetup on Events, DI & Dependency Management in Stockholm. 👉 jforum.confetti.events/jforum-126-me

🗂️ Unbundling the Cloud Data Warehouse with Zoe Steinkamp (ClickHouse). Build fast, flexible, open data architectures — beyond the limits of monolithic cloud warehouses ⚡ 👉 www.jfokus.se #Jfokus #DeveloperConference #DataEngineering #Analytics #OpenSource #ClickHouse

🔗 From Monoliths to Modern Integration Platforms with Pär Eriksson (Irori). Build integration platforms that stay flexible, secure, and strong in the winds of modern architecture ⚡ 👉 www.jfokus.se #Jfokus #DeveloperConference #Integration #Microservices #EventDriven #APIs

🟦 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

Winter is here, but the road to Jfokus stays warm 🔥 Next Jforum: 11 Dec, H&M Business Tech Headquarter jforum.confetti.events/jforum-126-m...

🚀 Java: To Infinity and Beyond with @sharatchander.bsky.social Celebrate 30 years of Java - and look ahead to the next 30 and beyond ✨ 👉 www.jfokus.se #Jfokus #DeveloperConference #Java #FutureOfJava

🕸️ Context Engineering: Connecting the Dots with Graphs with @steveonjava.bsky.social Give your AI the context it needs to truly reason ⚡ 👉 www.jfokus.se #Jfokus #DeveloperConference #AI #LLM #KnowledgeGraphs #Reasoning

🔥 JDK 25’s New CPU-Time Profiler with Johannes Bechberger. See what’s really burning your CPU — no unsafe tools required ⚡ 👉 www.jfokus.se #Jfokus #DeveloperConference #Java #JDK25 #Profiling #Performance

⚙️ Make Your Code Parallel with the Structured Concurrency API with @josepaumard.bsky.social (Oracle). Tame the threads and command concurrency like a true Java craftsman ⚡ 👉 www.jfokus.se #Jfokus #DeveloperConference #Java #ProjectLoom #StructuredConcurrency #VirtualThreads #Concurrency

🧠 Dehumanizing Agents: Why Explainability is Crucial in the LLM Era with Lucía Conde-Moreno at #Jfokus 2026 Understand your models before they understand you ⚡ 👉 www.jfokus.se #Jfokus #DeveloperConference #AI #Explainability #XAI #LLM #Ethics #Transparency

🧩 Hands-on Lab: Build Your Own Java-based MCP Server with David Parry at #Jfokus 2026 Learn the protocol of the future and forge your own intelligent agent ⚡ 👉 www.jfokus.se #DeveloperConference #Java #AI #MCP #Agents #HoL

🤖🍬 Hands-on Lab: AI in Control of Things with @joaklm.bsky.social (RISE) at #Jfokus Deep Dive Monday! Watch LLMs, IoT, and robots come alive — and meet the mighty Candytron 4000. Where code takes form and machines obey ⚡ 👉 www.jfokus.se #DeveloperConference #AI #IoT #Robotics #EdgeAI #LLM

🦙 Tame Your Llama - Run AI in Java with Lutske de Leeuw. Learn how to run Llama models locally, add AI to your Java apps, and let your code think for itself ⚡ 👉 www.jfokus.se #Jfokus #DeveloperConference #Java #AI #Llama #MachineLearning #NLP #Developers

🎃 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

🔐 Introduction to Verifiable Credentials with Sergey Beryozkin (Quarkus Security). Step into the future of digital identity — where trust is verified, not assumed ⚡ 👉 www.jfokus.se #Jfokus #DeveloperConference #Security #Identity #VerifiableCredentials #OpenID #Quarkus #Java