The EJB 3 framework was a major advancement for Java EE developers, providing a consistent, easy to use model to create and extend applications. EJB 3 incorporates a POJO programming model and Java 5 annotations, along with the Java Persistence API (JPA), a standard for object-relational mapping. EJB 3.1, the latest version, adds full support for Context and Dependency Injection (CDI), the new standard for type-safe dependency injection for Java EE. With EJB 3.1 you create true object-oriented applications that are easy to write, maintain, and extend.
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