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Enterprise JavaBeans is an architecture for transactional, component-based distributed computing. The specification for EJBs lays out not just the format of a bean itself, but also a set of services that must be provided by the container in which the bean runs. This makes EJBs a powerful development methodology for distributed application development. Neither the bean developer nor the client application programmer needs to be concerned with service details such as transaction support, security, remote object access, and many other complicated and error-prone issues. These are provided transparently for the developers by the EJB server and container.

The effect of the EJB architecture is to make server-side development much easier for the Java application programmer. Since the implementation details are hidden from the developer, and since services such as transaction support and security are provided in an easy-to-use manner, EJBs can be developed relatively quickly. Furthermore, EJBs offer portability. A bean that is developed on one EJB server should run on other EJB servers that meet the EJB specification. Portability has not been tested yet for most servers, but it is a bright promise for the future. for more.. 

Getting started

The EJB2 connector allows you to access the EJB2.X Remote Objects and methods.To get started, go to Configuring EJB2 Connector Operations. Once you have completed your configurations.

Additional information

For general information on using connectors and their operations in your ESB configurations, see Using a Connector . To download the connector, go to  https://github.com/wso2-dev/esb-connectors/tree/master/ejb2 , and then add and enable the connector  in your ESB instance.