title: GCM java server example
body: <p>Does anyone have a link to GCM java 3rd Party Server example? I can't understand how to implement it. In <a href="http://developer.android.com/google/gcm/server.html" rel="nofollow noreferrer">http://developer.android.com/google/gcm/server.html</a>, I could not find a complete example.</p>