InfoQ: Writing JEE applications with Grails and Flex
http://www.infoq.com/articles/flex-grails

Grails and Flex both have significant advantages in different parts of the software stack. In this new article you will learn how they can be combined to take advantage of each's strengths. Topics covered include component communication, data transfer, and JMS integration.

This article will go into detail about how to write JEE applications with Grails, a spin-off of traditional JEE application development, and Flex, a different technique that can be used with Java. Both frameworks can be highly productive. Combining the two frameworks holds the promise of building rich internet frontends to J2EE applications while retaining the high productivity.

JEE

Flex