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Enterprise Java Beans have been one of the corner stones of the Java EE specification. As a Java EE 5 certified application server, Apache Geronimo supports EJB's extensively with the help of OpenEJB EJB Container. Although it is possible to use standard Java objects to contain your business logic and business data, using EJBs addresses many of the issues of using simple Java objects, such as scalability, lifecycle management and state management. In this article, you will see how an initial database application is extended and used for both local and remotely referred application clients for an Enterprise Java Beans back end. The application uses the built-in Apache Derby as its database. Use this article to learn how to simplify your enterprise application development process.

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This article is organized in to following sections:

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Overview of EJB Features

EJB implementation may vary from one vendor to another. Below is a list with the main features supported by Apache Geronimo.

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