https://rabauer.dev/en/blog/ Live coding sessions and engineering craft. en © 2026 Johannes Rabauer https://rabauer.dev/en/blog/ai-developer-workflow/ https://rabauer.dev/en/blog/ai-developer-workflow/ A solo session on the workflow that beats chasing the newest model: four phases, Decide, Set Up, Build, Ship & Automate, plus a live demo from an empty repo to a spec, project rules, and automatic PR reviews. Sat, 11 Jul 2026 00:00:00 GMT ai-assisted-development ai-workflow context-engineering mcp spring-boot github-copilot live-coding agents-md https://rabauer.dev/en/blog/software-factories/ https://rabauer.dev/en/blog/software-factories/ Ingo Eichhorst joined me to show a practical Software Factory workflow for Java: define quality first, add hard guardrails, and let AI implement inside those boundaries. Thu, 02 Jul 2026 00:00:00 GMT software-factories java ai-assisted-development quality-gates testing live-coding eichhorst-principle https://rabauer.dev/en/blog/github-copilot-app-java-development/ https://rabauer.dev/en/blog/github-copilot-app-java-development/ Bruno Borges joined a live Java session to test the GitHub Copilot App from scratch. The scaffolding was easy, the PR workflow felt complete, and /create-canvas built a side-by-side i18n tool that lives in the repo. Here is what worked, what surprised us, and where the current gaps are. Thu, 25 Jun 2026 00:00:00 GMT github-copilot copilot-app java ai-assisted-development live-coding developer-productivity https://rabauer.dev/en/blog/kiro-java-hero-game/ https://rabauer.dev/en/blog/kiro-java-hero-game/ James Ward joined to build a Spring Boot card game using Amazon Kiro's spec-driven workflow. The app actually finished, the task list parallelized itself, and Java turned out to be surprisingly token-efficient with agentic tools. Thu, 18 Jun 2026 00:00:00 GMT kiro java spring-boot aws agentic-development spec-driven-development mcp live-coding https://rabauer.dev/en/blog/junie-intellij-spec-driven/ https://rabauer.dev/en/blog/junie-intellij-spec-driven/ Junie refused to cooperate, but that turned out to be the best possible demo: switching to another agent mid-session was seamless, and Anton's spec-driven workflow proved its value regardless of which agent was running. Thu, 11 Jun 2026 00:00:00 GMT junie intellij javafx spec-driven-development ai-agents jetbrains live-coding java https://rabauer.dev/en/blog/antigravity-cli/ https://rabauer.dev/en/blog/antigravity-cli/ We built a Java marathon tracking app with Google's new Antigravity CLI — live, with Google's Abdel Sghiouar. Here's what we found. Sun, 31 May 2026 00:00:00 GMT Antigravity CLI Google AI Java Quarkus Vaadin AI Coding Live Coding https://rabauer.dev/en/blog/event-modeling/ https://rabauer.dev/en/blog/event-modeling/ A live session with Adam Dymitruk where we separated Event Sourcing from Event Modeling, sketched a first model in Miro, and generated a running Java demo with Copilot in Docker sbx, even though we had limited time for a deep code walkthrough. Thu, 21 May 2026 00:00:00 GMT event-modeling event-sourcing java copilot live-coding miro https://rabauer.dev/en/blog/ai-unified-process/ https://rabauer.dev/en/blog/ai-unified-process/ Simon Martinelli introduced Spec-Driven Development and the AI Unified Process, then walked through all four phases live — from Vision document to a running Vaadin app scaffolded from a Maven archetype, with Claude Code handling most of the implementation. Wed, 13 May 2026 00:00:00 GMT spec-driven-development ai-unified-process java vaadin jooq claude-code flyio neon https://rabauer.dev/en/blog/semantic-anchors/ https://rabauer.dev/en/blog/semantic-anchors/ Ralf D. Müller introduced Semantic Anchors, Semantic Contracts, and Spec-Driven Development — a structured path from a rough idea to a full architecture document, specification, and GitHub Issues, without writing a single line of code. Sun, 10 May 2026 00:00:00 GMT semantic-anchors ai-agents java spec-driven-development arc42 doctoolchain vibe-coding https://rabauer.dev/en/blog/docker-sbx/ https://rabauer.dev/en/blog/docker-sbx/ Kevin Wittek and I ran a deliberately vulnerable Java project through Docker Sandbox to find out whether sbx can actually contain an AI agent in YOLO mode. The isolation held, and it changed how I think about running agents safely. Thu, 30 Apr 2026 00:00:00 GMT docker docker-sandbox ai-agents java maven github-copilot security testcontainers spring-boot vaadin https://rabauer.dev/en/blog/ibm-bob/ https://rabauer.dev/en/blog/ibm-bob/ We used IBM Bob's 40-coin trial budget to build a JavaFX chess game from scratch. The prompt enhancement and custom modes impressed, but we ran out of tokens before the tests could be reactivated. Mon, 13 Apr 2026 00:00:00 GMT ai-coding java javafx ibm-bob ai-ide live-coding https://rabauer.dev/en/blog/vise-coding-in-practice/ https://rabauer.dev/en/blog/vise-coding-in-practice/ This live session walked through five levels of AI coding autonomy in Java, but the real takeaway was simpler: sustainable AI development depends on small reviewable steps, explicit specs, and deterministic quality gates. Fri, 03 Apr 2026 00:00:00 GMT vise-coding ai-agents java github-copilot tdd spec-driven-development https://rabauer.dev/en/blog/neo4j-graphrag-live-refactor/ https://rabauer.dev/en/blog/neo4j-graphrag-live-refactor/ A two-hour live refactor that moved a file search app from PostgreSQL to Neo4j using GraphRAG and LangChain4j. The session didn't land, but four lessons made it worth the attempt. Thu, 26 Mar 2026 00:00:00 GMT neo4j graphrag java quarkus langchain4j live-coding knowledge-graphs rag https://rabauer.dev/en/blog/ai-openrewrite-recipes/ https://rabauer.dev/en/blog/ai-openrewrite-recipes/ What I took away from this session with Tim te Beek: OpenRewrite becomes especially powerful when AI is used to help build deterministic, testable recipes instead of making uncontrolled code changes. Thu, 19 Mar 2026 00:00:00 GMT openrewrite java modernization github-copilot live-coding https://rabauer.dev/en/blog/vibe-coding-battle/ https://rabauer.dev/en/blog/vibe-coding-battle/ Two predefined prompts, one shared Java app, and strict CI gates: the one-shot version started but failed when retrieving results, while the split-prompt workflow produced the more stable app and better quality metrics. Thu, 05 Mar 2026 00:00:00 GMT vibe-coding java github-copilot spring-boot spring-ai vaadin live-coding prompt-engineering https://rabauer.dev/en/blog/guided-coding/ https://rabauer.dev/en/blog/guided-coding/ This live session made a strong case for using AI as a disciplined implementation engine: define constraints first, separate planning from coding, and review output against architecture instead of accepting it at face value. Thu, 26 Feb 2026 00:00:00 GMT guided-coding java github-copilot vscode ai-agents live-coding