Archive - The Main Thread

Captain’s Log, Stardate Java: Building a Quarkus-Powered AI Sci-Fi App with Langchain4j and Ollama

Use the power of local LLMs, Quarkus magic, and Langchain4j tool calling to generate dynamic, weekday-aware space captain logs without cloud APIs.

24 hrs ago •

Tracing the Mind of Your AI: Java Observability with Quarkus and LangChain4j

Instrument, trace, and monitor your AI-powered Java apps using local LLMs, Ollama, and OpenTelemetry with zero boilerplate

Jul 25 •

Welcome to The Main Thread!

Navigating the future of Enterprise Java, one strategic insight at a time.

Jul 24 •

Wielding the Quarkus CLI: Why Java Developers Should Embrace This Command-Line Power Tool

Simplify your Quarkus development, boost productivity, and free yourself from Maven vs. Gradle complexity with one unified CLI.

Jul 24 •

and

Martin Stefanko

Smart Local AI Routing in Java: Build a Hybrid LLM Gateway with Quarkus and Ollama

Use LangChain4j, semantic embeddings, and Quarkus to route prompts to the best local LLM for coding, summarization, or chat without sending data to the…

Jul 23 •

Teaching Your Java App DNS: AI-Driven Lookups with Quarkus and LangChain4j

Build a smart DNS assistant using Quarkus, LangChain4j, and a local LLM.

Jul 22 •

Mastering AI Tool-Calling with Java: Build Your Own Dungeon Master with Quarkus and LangChain4j

Turn a local LLM into a dice-rolling, decision-making RPG game master. Powered by Java, Quarkus, and the magic of LangChain4j.

Jul 21 •

Groan-Worthy Greatness: Build an AI Dad Joke Generator with Java, Quarkus, and Langchain4j

Learn how to wire up local LLMs with @RegisterAiService and bring some humor (and hands-on AI skills) to your Quarkus apps.

Jul 20 •

Building Smart Support: AI-Driven Customer Service with Java and Quarkus

Harness the power of LangChain4j, Ollama, and pgvector to create a reactive, intelligent support system.

Jul 19 •

Teaching AI to Remember: Inside a Java-Based Semantic Memory System

How Quarkus, LangChain4j, and pgvector power long-term memory for intelligent, context-aware conversations

Jul 18 •

Streaming Database Rows in Real-Time with Quarkus, Mutiny, and Hibernate Reactive

Learn how to stream PostgreSQL rows to your browser.

Jul 17 •

Build a Smart Credit Card Validator with Quarkus, Langchain4j, and Ollama

Validate cards like a bank, talk like a human.

Jul 16 •

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