JEE5 New Features
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The document discusses the key features of Java EE 5 including annotations, dependency injection, EJB 3.0, Servlets 2.5, and how these features simplify development. It provides an overview of annotations and dependency injection, how they are used in Java EE 5, and the benefits they provide like reducing lines of code and XML. It also summarizes new features of EJB 3.0 like interceptors and lifecycle callbacks, and improvements in Servlets 2.5 such as wildcard mappings.
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JEE5 New Features
- 1. Presented by Haitham Raik Java EE 5.0 new features
- 19. Thank you Java EE 5.0 new features
Editor's Notes
- Override annotation is a marker annotation type that can be used to annotate methods only. This annotation type serves as an assertion that the annotated method overrides a method of a superclass method. If you use this annotation on a method that does not overrides a superclass method, the compiler issues a compiler error to alert you to this fact.
- Limitations: Because Java EE 5.0 supports dependency injection with managed classes, you can't use dependency injection from helper classes. And you must still use JNDI if you want to use resources or services from a helper class.