Building LLM Apps in Java with LangChain4j

Yesterday I gave a talk titled “Building LLM Apps in Java with LangChain4j.” The core idea was simple: building LLM applications is not mainly about writing clever prompts. It is about applying the same engineering discipline we already use in Java systems. The talk followed the staged evolution of a Spring Boot store assistant. It … Read more

Chat with Your Knowledge Base: A Hands-On Java & LangChain4j Guide

Disclaimer: This article details an experimental project built for learning and demonstration purposes. The implementation described is not intended as a production-grade solution. Some parts of the code were generated using JetBrains’ AI Agent, Junie. Large Language Models (LLMs) like GPT-4, Llama, and Gemini have revolutionized how we interact with information. However, their knowledge is … Read more

Building FormPilot: My Journey Creating an AI-Powered Form Filler with RAG, LangChain4j, and Ollama

Disclaimer: This article details an experimental project built for learning and demonstration purposes. The implementation described is not intended as production-grade solution. Some parts of the code were generated using JetBrains’ AI Agent, Junie. Have you ever found yourself filling out the same information on web forms over and over again? Name, email, address, phone … Read more