title: Framework to push notification to mobile devices (i.e.Android, Apple IPhone) from a web application
body: <p>I have been given a requirement to write a web application that has the capability of pushing notifications (apart from other things) to subscribed uses who are using mobile devices.</p>
  
  <p>I have some plans to write my own implementation on Java. But before I do that, does anyone know a good Java based framework out there to do this job without writing code from scratch.</p>
  
  <p>Main purpose is to push notifications to Android devices from the web application to start with.</p>
  
  <p>All ideas are appreciated.</p>
  
  <p>Thanks</p>