This libraries is composed of several modules:
Google OAuth Client Library for Java (google-oauth-client) is designed to be
compatible with all supported Java platforms, including Android.
Google App Engine extensions to the Google OAuth Client Library for Java
(google-oauth-client-appengine) support Java Google App Engine applications.
This module depends on google-oauth-client and google-oauth-client-servlet.
Java 6 (and higher) extensions to the Google OAuth Client Library for Java
(google-oauth-client-java6) support Java6+ applications. This module depends
on google-oauth-client.
Jetty extensions to the Google OAuth Client Library for Java
(google-oauth-client-jetty) support authorization code flow for installed
applications. This module depends on google-oauth-client-java6.
Servlet and JDO extensions to the Google OAuth Client Library for Java
(google-oauth-client-servlet) support Java servlet web applications. This
module depends on google-oauth-client.