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Johannes Rabauer

@rabauer

โ˜• Java coder @xdev.software | ๐Ÿค– AI wrangler | ๐ŸŽค Conference speaker | ๐ŸŽฎ Full-time dad, part-time gamer

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14.01.2025
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Latest posts by Johannes Rabauer @rabauer

Looking forward to it! ๐Ÿค“

05.03.2026 09:58 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

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. ๐Ÿค“

03.03.2026 16:07 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

If you're still vibe coding in 2026, you're leaving productivity on the table ๐Ÿ˜‰

Watch the full session:
youtube.com/live/vopBYXp...

28.02.2026 18:45 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

We also covered:
- Prompt injection risks
- Real guided coding projects
- Research workflows
- Live coding example

This is probably the most practical session I've been to on AI coding.

28.02.2026 18:45 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

My favorite section was feedback loops:
- Automated tests
- Linters
- Benchmarks

Instead of guessing if AI code works, you prove it works.

28.02.2026 18:45 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Preview
AGENTS.md AGENTS.md is a simple, open format for guiding coding agents. Think of it as a README for agents.

The most practical part was AGENTS.md

A single file that tells AI agents:

-How the project works
-What matters
-Coding rules
-Constraints

It massively reduces hallucinations.

28.02.2026 18:45 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Key idea:
Vibe coding = hoping the AI gets it right
Guided coding = making the AI predictable

The difference is huge.

Guided coding uses:
- Clear plans
- Structured context
- Feedback loops
- Repeatable workflows

28.02.2026 18:45 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 0

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.

Hereโ€™s the full session ๐Ÿ‘‡
youtube.com/live/vopBYXp...

28.02.2026 18:45 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 0

If you care about serious Java engineering, AI agents in real workflows, and maintainable code instead of quick hacks, this is for you.

AI and Java folks, join us live and bring your toughest questions.

23.02.2026 11:45 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Kenny will walk me through his Guided Coding framework:
โ€ข Plan first
โ€ข Constrain the AI
โ€ข Review aggressively
โ€ข Refactor deliberately

Using GitHub Copilot in Visual Studio Code with a real Java example.

23.02.2026 11:45 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 0
Preview
Guided Coding instead of Vibe Coding in Java with Kenny Pflug In this live session we focus on a structured approach to AI assisted development: Guided Coding in Java with Kenny Pflug (@KennyPflug) Guided Coding was dev...

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...

23.02.2026 11:45 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 0

To be honest: Never heard of it ^^

But after reading up on it, it does sound interesting, especially in the java environment. The tools i use usually have a single file, where they try to describe the structure of the codebase, but it seems like @buildwithbrokk.bsky.social does more here.

18.02.2026 15:12 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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java.evolved Code Snippets | java.evolved A collection of modern Java code snippets. Every old Java pattern next to its clean, modern replacement โ€” side by side.

java.evolved โ€“ Every old Java pattern next to its modern replacement, side by side.

javaevolved.github.io

16.02.2026 18:18 ๐Ÿ‘ 57 ๐Ÿ” 18 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 1
Preview
Controlled AI Comparison in a Java Project: Copilot, Claude Code, Junie In this live session I run a controlled comparison of three AI coding agents inside a real Java project.The project is a complete chat application stack:- Va...

If you care about serious Java workflows, agent based development, and reproducible AI evaluation, this will be interesting.

Join live.
Give hints.
Challenge assumptions.
Or just watch what actually happens.

๐Ÿ‘‰ youtube.com/live/XNtd3hJ...

#Java #SpringBoot #AIAgents #Copilot #Claude #IntelliJIDEA

16.02.2026 12:15 ๐Ÿ‘ 1 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

We will measure:

โ€ข Time to working build
โ€ข Number of iterations
โ€ข What extra context the agent requests
โ€ข Whether tests pass
โ€ข Code quality and architectural discipline

If the model is identical, will the agents still behave differently?

16.02.2026 12:15 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 0

The task is simple and strict.

Fix the failing tests.
Make the build green.
Make the application behave correctly.

That is it.

16.02.2026 12:15 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Three agents.
@github.com Copilot. @anthropic.com Claude Code. @jetbrains.com Junie.

Same project state.
Same prompt.
Same model: Claude Opus 4.6.

No architectural redesign. No shortcuts. No manual rescue unless clearly stated.

16.02.2026 12:15 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

This is a full stack chat application with authentication, persistence, frontend integration, Docker, and failing integration tests.

Existing architecture. Existing tests. Real constraints.

16.02.2026 12:15 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Preview
Controlled AI Comparison in a Java Project: Copilot, Claude Code, Junie In this live session I run a controlled comparison of three AI coding agents inside a real Java project.The project is a complete chat application stack:- Va...

AI coding agents claim they can handle real production Java projects.

Letโ€™s test that. Live.

I am running a controlled comparison inside a real world Java codebase.

Watch here:
๐Ÿ‘‰ youtube.com/live/XNtd3hJ...

16.02.2026 12:15 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

So looking forward to this! ๐Ÿ˜…

13.02.2026 18:08 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Is... is that comic sans? ๐Ÿ˜ง

11.02.2026 16:20 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Preview
Testing AI Assisted Java Development Inside IntelliJ IDEA In this live coding session I test AI assisted development directly inside IntelliJ IDEA using a real Java project.After experimenting with AI coding tools i...

I will be live coding, no slides, no script.
Testing where AI in @intellijidea.com actually helps and where human judgment still wins.
Join if you are curious and judge for yourself.
youtube.com/live/OAfmalI...

10.02.2026 15:02 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

This makes it the most honest place to test AI.
No new workflow to learn. No shiny distractions.
Just my normal Java development with AI added on top.

10.02.2026 15:02 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Now I am doing something that feels like a back to the roots vacation.
IntelliJ.
My long time Java IDE. Familiar. Opinionated. No novelty factor.

10.02.2026 15:02 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

I have tried AI in many forms so far.
CLI tools, web UIs, different editors, different models.
Sometimes it helps a lot. Sometimes it gets in the way. Both are worth learning from.

10.02.2026 15:02 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

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.

10.02.2026 15:02 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Post image

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?
Letโ€™s examine this live today at 20:00 CET
youtube.com/live/SVJC4Du...

05.02.2026 08:01 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Preview
Java Vibe Coding with GitHub Copilot CLI: Agent Assisted Development Continued In this third session, I continue the agent assisted coding experiment in Java by shifting focus from the IDE to the terminal. This time, the main collaborat...

Join me live on Thursday at 20:00 CET
youtube.com/live/SVJC4Du...

04.02.2026 13:03 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Post image

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

04.02.2026 13:03 ๐Ÿ‘ 2 ๐Ÿ” 1 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Wow...that doesn't sound right. How many hours did that cost you? ๐Ÿซ 

03.02.2026 16:18 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0