A hands-on guide to building a local sentiment analysis REST API using Java, Quarkus, and LangChain4j with Ollama-managed LLMs. The tutorial demonstrates creating a privacy-focused sentiment classifier that runs entirely on your machine using the Phi-3 Mini model, eliminating the need for cloud APIs or external dependencies. It
Table of contents
What You’ll BuildPrerequisitesBootstrap Your Quarkus ProjectConfigure Ollama and Dev ServicesDefine the Sentiment EnumCreate the AI Classification ServiceExpose the Sentiment APIRun It!Test It!Final ThoughtsWhat’s Next?Sort: