Google OAuth2 API Client Library for Java

Google OAuth2 API: Obtains end-user authorization grants for use with other Google APIs.

This page contains information about getting started with the Google OAuth2 API using the Google API Client Library for Java. In addition, you may be interested in the following documentation:


The oauth2-cmdline-sample may help you get started using the client library.

Add Library to Your Project

Select your build environment (Maven or Gradle) from the following tabs, or download a zip file containing all of the jars you need:


Download the Google OAuth2 API v1 Client Library for Java.

See the oauth2/readme.html file for details on:

  • What the zip file contains.
  • Which dependent jars are needed for each application type (web, installed, or Android application).

The libs folder contains all the of the globally applicable dependencies you might need across all application types.