Answer by Vijay Sarin for gwt beginner- how to organise+store code in java web app that uses gwt for frontend and also has backend code

Please refer to the following Link for packaging an Enterprise Application

http://code.google.com/webtoolkit/articles/mvp-architecture.html

I hope this helps you. Also, its a good practice of using Maven along with GWT so that you can divide the Project into simple modules, then build them to make up a large scale application.