Google Mashup Editor Getting Started Guide

Google Mashup Editor (GME) is an interactive development environment in which you edit, compile, test, and manage your applications. The editor includes a built-in reference guide to all GME tags and attributes. When your application is finished, you can publish it on Google’s servers, where it’s available for others to run.

GO GOOGLE WAYS

http://code.google.com/gme/gettingstarted.html

Google Web Toolkit – Build AJAX apps in the Java language

Google Web Toolkit (GWT) is an open source Java software development framework that makes writing AJAX applications like Google Maps and Gmail easy for developers who don’t speak browser quirks as a second language. Writing dynamic web applications today is a tedious and error-prone process; you spend 90% of your time working around subtle incompatibilities between web browsers and platforms, and JavaScript’s lack of modularity makes sharing, testing, and reusing AJAX components difficult and fragile.

GWT lets you avoid many of these headaches while offering your users the same dynamic, standards-compliant experience. You write your front end in the Java programming language, and the GWT compiler converts your Java classes to browser-compliant JavaScript and HTML.

Go Google ways

http://code.google.com/webtoolkit/