AjaxLine

Dietrich Kappe writes about using Grails and JSON together. He writes:

«For all of those Java developers casting longing glances at their buddies doing Rails development, there is hope. Grails, which has just celebrated its 1.0 release, is a Rails-like "convention over configuration" framework that aims to do for the Java world what Rails has done for Ruby. Instead of Ruby, the dynamic programming language of choice is Groovy, which compiles to bytecode (no Groovy to Java translation) and integrates smoothly with just about any Java code you may be using.»

Also thereis a lots of practical examples. You can find this article at Agile AJAX site.