| Publisher | Oracle | ||
|---|---|---|---|
| Format | HTML | Date added | 01 Nov 2006 |
| Topics | Java, Programming Languages, Software Engineering | ||
| Downloads | 46 | ||
The Summer 2006 release of the EJB 3.0 specification delivers a much simplified but more powerful EJB framework that demonstrates a marked preference for annotations over traditional EJB 2.x deployment descriptors. Annotations, introduced in J2SE 5.0, are modifiers that can be used in classes, fields, methods, parameters, local variables, constructors, enumerations, and packages. Annotation use is highlighted in a myriad of new EJB 3.0 features such as Plain Old Java Object-based EJB classes, dependency injection of EJB manager classes, the introduction of interceptors or methods that can intercept other business method invocations, and a greatly enhanced Java Persistence API (JPA). To illustrate the concepts of JPA, let's walk through a real-life example.
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