<ul data-eligibleForWebStory="true">LangChain4j is a Java-centric tool for building LLM-powered applications, akin to LangChain in Python.Ollama is a local LLM runtime to run models like LLaMA2 or Mistral on your machine via HTTP.The guide covers setting up a Java project with LangChain4j, integrating it with Ollama, and utilizing LLMs.Prerequisites include setting up Ollama and pulling the llama3.2 model.Step-by-step instructions involve creating a Maven project, updating pom.xml, and defining a HelloWorld class.The HelloWorld application sends a prompt to LLaMA3.2 and prints the response in the console.OllamaLanguageModel builder specifies the Ollama model integration details in Java code.Important details like baseUrl and modelName are set for interacting with the Ollama model.A prompt is defined to inquire about Interesting Facts about LLMs in a concise manner.The process generates a Response object including generated content, token usage, finish reason, and metadata.