title: GCM server side implementation for java
body: <p>I need to implement a standalone application for the server side of gcm to push notifications to the device. Is there any reference i could get other than the one on the Getting started page.People say something about xmpp. Do we need to use this or can we directly use the gcm server side methods.Help.Or is there any other easy way to implement this.I hope i put my question properly.</p>