EJB Tutorial

EJB - Useful Resources
The following resources contain additional information on EJB. Please use them to get more in-depth knowledge on this.
Discuss EJB
Enterprise Java Beans (EJB) is a development architecture for building highly scalable and robust enterprise level applications to be deployed on J2EE compliant Application Server such as JBOSS, Web Logic etc.
EJB - Quick Guide
EJB stands for Enterprise Java Beans. EJB is an essential part of a J2EE platform. J2EE platform has component based architecture to provide multi-tiered, distributed and highly transactional features to enterprise level applications.
EJB - Exception Handling
EJBs are a part of enterprise applications which are normally based on distributed environments. So, apart from the normal exceptions that can occur, there can be exceptions like communication failure, security permissions, server down, etc.
EJB - Web Services
EJB 3.0 provides an option to expose session EJB as a webservice. @WebService annotation is used to mark a class as a web service end point and @WebMethod is used to expose a method as web method to client.
EJB - Packaging Applications
Requirement of Packaging applications using EJB 3.0 are similar to that of J2EE platform. EJB components are packaged into modules as jar files and are packaged into application enterprise archive as ear file.

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