Hey people! I've decided to accompany my live coding session with blog posts to condense what i have learned in a session. Check it out, if you can spare 5min ^^ Let's start with the session with @edelveis.dev rabauer.dev/blog/vibe-co...

Going live today, 20:00 CEST 🚀 Jennifer Reif (@neo4j.com) and I are adding graph traversal on top of vector search and seeing what breaks (and what gets better). Expect a bit of chaos. Join us 👇 youtube.com/live/KUcZL2y... #GraphRAG #LangChain4J

Graph DB vs relational DB for AI apps… is it hype or actually useful? We’re refactoring a real app live and testing it ourselves. Curious where graphs actually shine. Jump in and help us break it 🎭 youtube.com/live/KUcZL2y... #Neo4j #GraphDatabases

I keep hearing about #GraphRAG vs classic #RAG …but what actually changes? I’ll be figuring it out live with Jennifer Reif from @neo4j.com and asking all the naive questions. If you’ve got some, bring them here youtube.com/live/KUcZL2y...

Together with @timtebeek.github.io from @moderneai.bsky.social I’ll explore how AI can help modernize a Java codebase in a structured, reproducible way with @openrewrite.github.io We’ll look at a real codebase and see how far we can push AI assisted refactoring. youtube.com/live/LpGguXs...

An alle Oberpfälzer und die restliche deutsche Bevölkerung: 😅 Kommt doch gerne am Freitag zum #DCD in Weiden (an der OTH Weiden) in meine Session! Würde mich über jeden freuen und ich glaube für die Zuhörer wird's auch recht informativ und lustig 😎 www.dc-nordoberpfalz.de/DigitalCraft...

So excited to do some vibe coding in a familiar environment, Java! :D Regardless of the outcome: There will be something to learn from this. 🤓

Many people are still doing vibe coding. After a 2+ hour session with Kenny Pflug, I realized there's a better way: guided coding. Less chaos. More results. Better AI collaboration. Here’s the full session 👇 youtube.com/live/vopBYXp...

Live session: Guided Coding in Java with Kenny Pflug. Not vibe coding. Not blind prompting. We explore a structured way to collaborate with AI while keeping architectural control and code quality high. youtube.com/live/vopBYXp...

java.evolved – Every old Java pattern next to its modern replacement, side by side. javaevolved.github.io

AI coding agents claim they can handle real production Java projects. Let’s test that. Live. I am running a controlled comparison inside a real world Java codebase. Watch here: 👉 youtube.com/live/XNtd3hJ...

So looking forward to this! 😅

Over the last year I discovered that experimenting with coding assistants is genuinely fun. Not because they solve everything, but because they change how I explore ideas, refactor code, and think while coding.

AI feels fast, but feelings are not measurements. Studies claim 20 to 50 percent productivity gains, especially for debugging and issue analysis. Is that real or just perception? Let’s examine this live today at 20:00 CET youtube.com/live/SVJC4Du...

AI adoption often stops the moment GDPR enters the conversation. Local models, client approval, and limited code access make real world usage messy. I will talk about what actually works and what does not in a live session (with @brunoborges.bsky.social). #GDPR #DataProtection #Java

Vibe coding does not automatically make you smarter. You only learn if you actively analyze what the AI writes and that takes real mental effort. I will test this in a live Java coding session on Thursday at 20:00 CET youtube.com/live/qco_f2d...

Waiting for AI to generate code is not passive time. If you treat it like waiting for a compiler, you waste the biggest advantage of agent assisted development. I want to explore this mindset live with Copilot CLI and Java. #VibeCoding #AIProgramming #Java #LiveSession

Vibe coded applications are easy to write and hard to trust. When AI produces most of the code, validation and verification become the real work. I will dig into this problem live while coding Java with GitHub Copilot CLI. #AgentAssistedDevelopment #Java #GitHubCopilot #LiveCoding

What changes when you replace GitHub Copilot with Claude Code? In part two of my live coding experiment, I continue the same project but switch the coding agent. Same codebase, same goals, different AI. Repository:https://github.com/JohannesRabauer/ai-rpg-vibe-code

What if I let GitHub Copilot build a game while I just sip coffee? ☕💻 Live coding again, pure vibe coding. This time I’m starting a game with @quarkus.io and @vaadin.com , tools I actually know well.

Recently I worked with @hibernate.org in a slightly larger backend project. Pretty quickly I realized the real problem was not performance. It was that I did not fully understand what Hibernate was doing. #Java #BackendDevelopment

I usually do live coding with all the chaos, typos, and questionable decisions left in. This time I tried something new: an actually scripted video. With cuts. And pacing. Let me know if you like that kind of stuff ^^

👾New on CyberJAR: Streaming LLM Tokens with NDJSON and Spring AI I've decided to focus on a more niche topic with #SpringAI: this guide is useful if you want to stream LLM responses and avoid parsing issues www.youtube.com/watch?v=l6c0...

Next JUG Oberpfalz Meetup: 📅 Today 1730h We’re excited to welcome Johannes Rabauer to #JUGOberpfalz for a unique live-coding battle between Spring + Spring AI and Quarkus + LangChain4J. No slides – just clean code, directly compared! 🔗 Register here (free): www.meetup.com/jug-o...

Caution: German content incoming! Join me on 12. Nov. at 18:00 in #Weiden with the #JUG #Oberpfalz rabauer.dev/meetup #Java #AI #Meetup #SpringAI #LangChain4J #DeveloperCommunity #CodingEvent

Quanta Part 2 is done! 🎉 We now have a fully working AI file searcher that can vectorize your files and let you search them using natural language. All running locally with Quarkus, Ollama, and pgvector.

Really looking forward to it!

AI is more accessible than ever. No GPUs, no fancy infrastructure, no giant models needed. Just you, some open-source tools, and a bit of curiosity. 🤓 Join me live as we build an AI file searcher using Quarkus, Ollama, and pgvector. 🎥 Join here → youtube.com/live/cY2anCL...

I'm so happy the idea catches on! I truly look at them every day 🤓

We are going live today, in just 2 hours! See you there😊

Really looking forward to some comparisons between frameworks 🤓

Securing LLM Responses in Java: Guardrails with Quarkus and LangChain4j Learn how to protect your AI applications from prompt injection, unsafe outputs, and risky prompts with practical guardrail patterns in Quarkus. www.the-main-thread.com/p/java-quark...

Just went live building Quanta: an AI-powered file searcher that understands your files 🤖📂 It watches your filesystem, vectorizes docs, and lets you query them in natural language. Let’s make local AI search actually useful 👇

After building an AI storytelling app for fun… …it’s time to create something actually useful. 🚀 Meet Quanta – an AI file searcher.

Excited to welcome Johannes Rabauer as our newest Oracle ACE Associate! 🚀 Johannes crafts secure, scalable Java solutions. Cloud, AI, frameworks & clean code—he’s passionate about making developers’ lives easier. Learn more: ace.oracle.com/ords/ace/pro... #OracleACE

Just unlocked a new achievement: 🏆 Oracle ACE Associate! Big thanks to the Oracle community 🙌 Catch me dropping Java wisdom at JCON or on YouTube 😂 #OracleACE #Java #DevCommunity @oracleace.bsky.social

Part 10: Agents came alive in LangChain4J + Ollama 💡 Part 11 (Sat 20:00 CET): Can we give the entire system memory that persists in PostgreSQL? One landscape, many agents, real continuity. Join the experiment 👉 youtube.com/live/Jpid86_... #Java #AIAgents

🚀 Just dropped Part 9 of my Java AI adventure game series. This one had everything: persistence fixes, broken models, Google SDK experiments, and… a plot twist I didn’t see coming. 👉 Video: youtube.com/live/xppcyTU...

Thanks for uploading! The session was such a fun experience!

Sorry, i have to postpone my Livestream today for health reasons...maybe i'll be able in the coming days again. youtube.com/live/xppcyTU...

Tried to implement LLM memory persistence in my little AI text adventure with #LangChain4j during a live coding session. Spoiler: persistence was the real final boss. 🕹️ Finally cracked it (off-stream) and made a repo for everybody: 👉https://github.com/JohannesRabauer/langchain4j-spring-jpa-memory

At XDEV, we offer tools, recipes, and consulting around Java Modernization and OpenRewrite. Get in touch and learn how to start your Modernization journey!

👾CyberJAR Live: Java, JavaFX, and Experiments with Raspberry Pi This Thursday, I'm joined by @frankdelporte.be, Java Champion and JavaFX+RPi guru, to explore the world of #Java on the embedded. For those who wanted to tinker with RPi but didn't know where to start :) youtube.com/live/axbx2kT...

🌳 Java devs: ever feel like AI in Java is a wild forest? Guess what—tools are finally landing: meet the Java AI toolbox with @spring-ai.bsky.social & @langchain4j.dev Ready to wield? Let’s go! #JavaAI #SpringBoot #LangChain4j

🚀 Just built custom Ollama models in Java (Qwen3 + LLaMA 3.2:1.7B) — and things got chaotic 😅 Live coding, broken prompts, wrongful victories, and some real lessons for #JavaDev + #AI. 🧵 Here’s what went down (and I need your help for what’s next) 👇

Part 7 of our AI game development series is live — more about exploring ideas together than ticking off a checklist. #AI #GameDev #LLM #JavaDev

🧠 Thinking LLMs are cool… until they start thinking too much. Just wrapped up another live coding session in #LangChain4J testing thinking-enabled models. Here’s what happened 👇 #Java #LLM #AItools #GenerativeAI

Are you also often uninspired when you need to think of useful test data for your unit tests? Is ‘John Doe’ your best test friend? Do not worry, Datafaker comes to the resc#javajava

The latest live coding session was... something else. AI logic, function calls, broken ASCII art. 🎥 Catch the next session here: youtube.com/live/jbnWaC0... #LiveCoding #Java #AI #OpenSource

Just finished a live coding session playing with AI coding assistants and trying to swap @spring-ai.bsky.social with @langchain4j.dev in a Java project. Here's what I learned 🧵👇