Before you start using Google WTP i strongly sugest that you read this post by Jevgeni Kabanov. Do also check out the alternative projets the post refers to! There are lots of alternatives out there:)
Opinion: Will Google Web Toolkit Matter?
I’ve listed some of the projects here if you don’t bother to read the post(but you should):
- Java2Script:
Converts java to java-script (Has plugin for eclipse and uses Eclipse SWT libraries for the graphical elements) - DoJo:
Provides a JavaScript Widget toolkit - Echo2:
“a platform for developing web-based applications that approach the capabilities of rich clients” - DWR:
“DWR is easy AJAX for Java.”