Name: Java meets AI: Build LLM-Powered Apps with LangChain4j
Start: 2025-04-16T17:30:00-07:00
End: 2025-04-16T19:00:00-07:00
Location: Elastic, N.V. SF Office

**In person at the Elastic San Francisco office -- registration required to access the building and see the address. In-person Registration is cut off is the morning of the event, so register beforehand!**
Presenter is remote, but you're welcome to attend in person or via Zoom:
[https://elastic.zoom.us/j/6372098304](https://elastic.zoom.us/j/6372098304)

Join us for a guided tour through the possibilities of the LangChain4j framework! Chat with virtually any LLM provider (OpenAI, Gemini, HuggingFace, Azure, AWS, ...)? Generate AI images straight from your Java application with Dall-E and Gemini? Have LLMs return POJOs? Interact with local models on your machine? LangChain4j makes it a piece of cake! We will explain the fundamental building blocks of LLM-powered applications, show you how to chain them together into AI Services, and how to interact with your knowledge base using advanced RAG.

Then, we take a deeper dive into the Quarkus LangChain4j integration. We'll show how little code is needed when using Quarkus, how live reload makes experimenting with prompts a breeze and finally, we'll look at its native image generation capabilities, aiming to get your AI-powered app deployment-ready in no time.

By the end of this session, you will have all the technical knowledge to get your hands dirty, along with plenty of inspiration for designing the apps of the future.

Speaker:
Eric Deandrea is a Java Champion & Senior Principal Developer Advocate at Red Hat, focusing on application development technologies. Eric has over 25 years of experience designing and building Java-based solutions and developer training programs. He is a contributor to various OSS projects, including Quarkus, Spring, LangChain4j, WireMock, and Microcks, as well as a speaker at many public events and user groups around the world. Eric recently put his Quarkus and Spring knowledge to use by publishing his first book, “Quarkus for Spring Developers ([https://red.ht/quarkus-spring-devs](https://red.ht/quarkus-spring-devs)).” Outside of work, Eric enjoys boating on the lakes of New Hampshire, ice hockey, and martial arts, in which he holds a black belt in Kempo Karate.

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Philipp Krenn

Benjamin Nothdurft

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Java meets AI: Build LLM-Powered Apps with LangChain4j

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