EJB specifications
The Enterprise JavaBeans (EJB) specification is a foundation for the Java 2 Platform, Enterprise Edition (J2EE) defined by Sun. Vendors use this specification to implement an infrastructure in which components can be deployed, and use a set of services such as distributed transactions, security, or life-cycle management. As a developer, you just reuse the services detailed in the specification. For example, you do not need to include any code in your components to make them transactional. This lets you concentrate on the business logic of the application.
Enterprise beans are designed to be portable from one vendor’s execution environment to another, independent of the choices made by the vendor to implement the services described ...
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