obtaining GWT for download

http://java.sun.com/j2se/1.4.2/download.html

or


code.google.com/webtoolkit/download.html

GOOGLE WEB TOOLKIT

the google web toolkit (GWT) has been designed to provide a complete environment for programmers to developed dynamic and standardised contents.

http://code.google.com/webtoolkit


its most outstanding feature is that while the programmer prepares the front-end in Java , the GWT 
compiler converts the code into javascript and html for the browsers.

GOOGLE CODE SEARCH

CODE SEARCH WWW.GOOGLE.COM/CODESEARCH

google.com/codesearch


google has also released the API for code search

http://code.google.com/apis/gdata/index.html