Awesome

Item Directory - an example web application using Apache Wicket#

Item Directory is a web appplication to help you manage your collections of items (CDs, movies, books or even postage stamps). Application is built with Java, Wicket, JPA, Spring 3 and MySQL as a database.

More details and information can be found in my series of blog posts here: http://tomaszdziurko.pl/2011/03/wicket-tutorial-series-building-web-application-scratch/