Contexts and Dependency Injection for the Java EE Platform (JSR 299)

Contexts and Dependency Injection (CDI) for the Java EE platform defines a set of contextual services, provided by Java EE containers, that make it easy for developers to use enterprise beans along with JavaServer Faces technology in web applications. Designed for use with stateful objects, CDI also has many broader uses, allowing developers a great deal of flexibility to integrate different kinds of components in a loosely coupled but type-safe way.

CDI is new to the Java EE 6 platform.