Installing OR-Tools for Java from Binary on Windows


This guide explains how to install OR-Tools for Java on Windows.

Although these instructions might also work on other Windows variants, we have only tested them on machines meeting the following requirements:

  • Windows 10 64-bit (x86_64) with
  • Microsoft Visual Studio 2022 or Visual Studio Community 2022
  • Microsoft Visual Studio 2019 or Visual Studio Community 2019

Microsoft Visual C++ Redistributable

You must have the Microsoft Visual C++ Redistributable for Visual Studio 2019 (select the x64 version) installed on your computer, since OR-Tools library for Java is a wrapper for the C++ native library.

Java JDK

You must also have a Java JDK 64 bit, version 8.0 or later installed. You can find more details here.


You must also have a Maven 64 bit installed. You can find more details here.

Installing OR-Tools

Take the following steps to install the OR-Tools library for Java:

Download and extract the binary distribution for your system:

FlatZinc binary distributions

FlatZinc is a solver input language understood by a wide range of solvers.
OR-Tools also provides binary distributions with FlatZinc support:

Validate your installation

To test your Java installations, open a x64 Native Tools Command Prompt and navigate to the directory where you unpacked the binary distribution. Then enter the following command:

tools\make test_java

This runs a selection of examples for OR-Tools. If all the examples run successfully, you are ready to get started with OR-Tools.