JAVA + SPRING AI

Building AI-powered applications with Java and Spring.

Starts with a targeted Spring and Spring Boot refresher, then moves into Spring AI — ChatClient, RAG, tool calling, and microservices that talk to LLMs and AI agents. Most topics here have three levels — Introduction, Intermediate, and Advanced.

Dependency Injection & Beans
The core Spring idea everything else builds on — objects that ask for what they need instead of building it themselves.
Introduction Intermediate Advanced
Spring Boot Auto-configuration & REST Controllers
How Spring Boot removes manual wiring, and how a REST endpoint actually gets built.
Introduction Intermediate Advanced
Microservices with Spring Boot
Building, coordinating, and giving data to independent Spring Boot services — REST, discovery, gateways, and database-per-service.
Introduction Intermediate Advanced
ChatClient + Ollama Integration
Spring AI’s core chat API, connected to a model running on your own machine.
Introduction Intermediate Advanced
RAG with Spring AI
Spring AI’s VectorStore abstraction, document embedding, and retrieval — RAG, the Java way.
Introduction Intermediate Advanced
Function / Tool Calling in Spring AI
Letting an LLM call real Java methods through Spring AI’s tool-calling support.
Introduction Intermediate Advanced
Microservices Meet LLMs & AI Agents
Exposing Spring AI as its own service, and building agents whose tools call other microservices.
Introduction Intermediate Advanced