Mark it up with Groovy Builders
http://www-128.ibm.com/developerworks/web/library/j-pg04125/

Glover, Andrew
IBM
2005

Abstract:

Groovy Builders let you mimic markup languages like XML, HTML, Ant tasks, and even GUIs with frameworks like Swing.They're especially useful for rapid prototyping and, as Practically Groovy columnist Andrew Glover shows you this month, they're a handy alternative to data binding frameworks when you need consumable markup in a snap!