Kamal Chandana Mettananda :
Using GWT and Servlets inside one web application will result in a convenient web experiece. This tutorial will take you though the steps of developing a simple web application with Google Web Toolkit and J2EE Servlet Technology. The application will have a servlet on server side and one web page. When a user clicks a button on the page, web page content will be updated without refreshing or leaving the current page. But the web page will talk to a servlet deployed in web server and update the page content. The communication between web server and browser will be invisible to the user, providing a convenient web experience.
Google Web Toolkit (GWT) & Servlets - Web application tutorial
