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Stateless Session Beans are business objects that do not have state associated with them. The @Stateless annotation is used to mark the class as Stateless Session Bean. Access to a single bean [...]

Introduction Enterprise JavaBeans (EJB) is server-side component model of the Java platform for developing distributed enterprise applications. It enables enterprises develop “secure, scalable, [...]

A remote client of a session bean can be another enterprise bean deployed in the same or different container; or it can be an arbitrary Java program, such as an application, applet, or servlet. [...]

A local client is a client that is in the same JVM with the session bean that provides the local client view. For example, EJB deployed in JBoss container and servlet client deployed in the SAME [...]

Only Stateless session beans and Singleton session beans may have web service clients. To provide a webservice endpoint interface view for the client, the business interface of the bean should be [...]

Stateful Session Beans are business objects having state (values of its instance variables) Because the client interacts (“talks”) with its bean, this state is often called the [...]

The @Stateful annotation is used to mark the class as Stateful Session Bean. This annotation’s specification is as follows. @Target(value=TYPE) @Retention(value=RUNTIME) public @interface [...]

Business Interface Create the bean interface and mark it either as @Remote or @Local. Stateful cannot have web service client view. Remote Interface Local Interface Bean implementation class [...]

The lifecycle callbacks are methods defined in the bean class but not in business interface which the container calls when specific lifecycle event or transition occurs. The following annotations [...]

A session bean instance’s life starts when a client obtains a reference to a stateful session bean instance through dependency injection or JNDI lookup. Next, the container performs any [...]