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Rajesh Mishra
Rajesh Mishra

Posted on • Originally published at howtostartprogramming.in

How to Use a Local LLM with Spring Boot and LangChain4j in 2026

This is a summary of the full tutorial published on howtostartprogramming.in.

TL;DR Plug a local LLM into a Spring Boot app in seconds with LangChain4j . The library abstracts model loading, prompt chaining, and response handling, letting you keep data on‑premise while writing idiomatic Spring code. Table of Contents TL;DR Introduction Prerequisites Core Concepts LangChain4j Abstractions Step‑by‑Step Integration 1. Add the required dependencies 2. Configure the LLM bean Full Example Project 1. Project Structure 2. pom.xml Common Mistakes & How to Avoid Them Production‑Ready Tips 1. Scale with Asynchronous Calls 2. Cache Expensive LLM Responses FAQ – Using a Local LLM with Spring Boot & LangChain4j (2026) 1. What license do I need for the LLM and LangChain4j? 2. Should I run inference on GPU or CPU? Key Takeaways Why go local with LangChain4j & Spring Boot? Best‑Prac


📖 Read the Full Tutorial

🔗 How to use local LLM with Spring Boot and LangChain4j 2026 — Full Guide with Code Examples

The full article includes:

  • ✅ Step-by-step code examples (copy-paste ready)
  • ✅ Complete working project (Spring Boot / Java)
  • ✅ Common mistakes + fixes
  • ✅ Production tips and benchmarks
  • ✅ FAQ section

Published on How to Start Programming — practical AI and Java tutorials for developers.

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