JPA

Building EJB application using JBOSS Server

Building an EJB requires assembling the correct component parts. These include interfaces and deployment descriptors.

EJB Interfaces

• All bean classes must implement javax.ejb.EnterpriseBean, or one of its subinterfaces, at some level.
• javax.ejb.EnterpriseBean extends java.io.Serializable.
• Session beans implement javax.ejb.SessionBean.
• javax.ejb.SessionBean extends javax.ejb.EnterpriseBean.
• It defines methods: ejbActivate, ejbPassivate, ejbRemove, and setSessionContext.

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