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Ollama4J

Ollama4J is an open-source Java wrapper and binding library for connecting Java applications to an Ollama server. It documents interfaces for text generation, chat, embeddings, tool calling, model management and server utilities.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Ollama4J — OpenViST project profile in AI Developer Tools & SDKs.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use Ollama4J when a Java project needs a library interface to an Ollama server and its models.

Who it is for

  • Java developers building applications that communicate with an Ollama server.
  • Teams integrating Ollama-hosted language models into Java projects.

Documented uses

  • Add an Ollama client library to a Java project through Maven.
  • Call documented Ollama functions from Java, including text generation, chat and embeddings.
  • Manage models and check server connectivity from a Java application.
Before you choose

Requirements & limits

The project is public on GitHub and identifies its license as MIT. Its README specifies Java 17+ and Ollama 0.11.10+; it describes publishing artifacts to Maven Central and GitHub Packages.

  • Requires Java 17 or later and Ollama 0.11.10 or later, according to the README.
  • Vision inputs and reasoning outputs are conditional on model support.
  • Prometheus metrics export is marked beta.
  • The library is an application-side client; the Ollama server manages the models.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Add Ollama4J to a Maven project

Declare Ollama4J as a dependency using Maven Central.

Before you start

  • A Maven project.
  • Java 17 or later.
  • An Ollama server running Ollama 0.11.10 or later for interaction.

Steps

  1. Use the Ollama4J artifact coordinates io.github.ollama4j:ollama4j in the project's Maven dependency declaration.

  2. Set the dependency version to the release version required by the project, consulting the releases listing.

Expected outcome

The Maven project declares Ollama4J as a dependency; the library is intended to communicate with an Ollama server.

Guide limitations

  • The documented dependency declaration does not cover application code or demonstrate a particular operation.
  • Using Ollama4J to interact with a server requires the documented Java and Ollama versions.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
Active
Sources checked
14 October 2026
Original website title
ollama4j/ollama4j · Official homepage title · retained in its source language
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