Learn how and when to use the contexts & dependency injection model in Java EE 6.
IntroductionJava Platform, Enterprise Edition (Java EE) 5 brought dependency injection (DI) with Convention over Configuration to Enterprise JavaBeans (EJB) 3.0. Java EE 6 introduces the flexible and powerful @Inject dependency injection model (JSR-330 and JSR-299) in addition to the already existing @EJB annotation. So when should you use what?
