I've uploaded to GitHub (http://github.com/tomcz/pico-webapp/tree/master) the web application that I use to teach people about dependency injection (using PicoContainer), post-redirect-get browser interaction, RESTful URIs and strict template rendering (using StringTemplate). This application does not use Spring Framework by deliberate design - as soon as I introduce it to any teaching session I spend more time talking about Spring then talking about what I am usually there to accomplish. As usual, any comments, bugs or enhancement requests are very welcome.