Spring injection with @Resource, @Autowired and @Inject

I've always wondered what the differences were and someone has gone through a TDD explanation - nice! :)

http://blogs.sourceallies.com/2011/08/spring-injection-with-resource-and-autowired/

Incidently, using the @Resource + mappedName attribute is a nice shortcut to map to JNDI properties.

http://radio-weblogs.com/0135826/2006/04/06.html#a198