Jfokus
@Jfokus

Jfokus is all about developers! Check out the conference: jfokus.com

 Stockholm
jfokus.com
Joined June 2009
988 Photos and videos
🟨 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
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🟨 SPEAKER DETECTED: @gunnarmorling 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
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🟨 SPEAKER DETECTED: Rijo Sam 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
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🟨 SPEAKER DETECTED: Alexander Chatzizacharias @glyc1n Alexander 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
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🟨 SPEAKER DETECTED: @JOAKlM 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
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🟨 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. jfokus.se #Jfokus
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🟨 SPEAKER DETECTED: @TobiasModig 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. jfokus.se #Jfokus
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🟨 SPEAKER DETECTED: Daniel Raniz Raneland 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. jfokus.se #Jfokus
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🟨 SPEAKER DETECTED: @KevlinHenney 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. jfokus.se #Jfokus
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🟨 SPEAKER DETECTED: Simon Martinelli @simas_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. jfokus.se
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TWO-PLAYER MODE: Marit van Dijk + Piotr Przybyl @MaritvanDijk77 @piotrprz Modern Java, without the intimidation. Explore recent features and try them directly in your IDE. “Learning modern Java the playful way” jfokus.se #Java
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SPEAKER DETECTED: Jonathan Vila @vilojona AI agents need seatbelts. Learn practical ways to tighten access, improve context and validation, and make AI code generation safer. “Agents With Seatbelts” jfokus.se #Jfokus
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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. jfokus.se #agenticengineering #Jfokus
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SPEAKER DETECTED: Dan Vega @therealdanvega 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” jfokus.se #SpringAI #Jfokus
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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” jfokus.se #Jfokus
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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 → jfokus.se
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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
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🕹️ 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. 👉 jfokus.se/
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Registration opens in 2 days and we are publishing the first speakers jfokus.se
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