EJB Section Index

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How do I use the @PostConstruct annotation in EJB 3.0?

What's difference between Servlet/JSP session and EJB session?

From a logical point of view, a Servlet/JSP session is similar to an EJB session. Using a session, in fact, a client can connect to a server and maintain his state. But, is important to understan...more

What is session facade?

Session facade is one design pattern that is often used while developing enterprise applications. It is implemented as a higher level component (i.e.: Session EJB), and it contains all the iteract...more

How to implement an entity bean which the PrimaryKey is an autonumeric field

The EJB 2 Spec (10.8.3 - Special case: Unknown primary key class) says that in cases where the PrimaryKeys are generated automatically by the underlying database, the bean provider must declare th...more

What is the meaning of marshalling and unmarshalling?

Omar, In few words, "marshalling" refers to the process of converting the data or the objects inbto a byte-stream, and "unmarshalling" is the reverse process of converting the byte-stream beack to...more

How can I use JUnit to test J2EE/EJB applications?

Check out Jeff Schnitzer's JUnitEE package and the Wiki EJB Unit Testing page.

What is a stateful session bean?

A stateful session bean is an enterprise bean (EJB component) that acts as a server-side extension of the client that uses it. The stateful session bean is created by a client and will work for o...more

Using the Java Connector Architecture with EJBs. Can I map an entity bean to an EIS for which a JCA resource manager exists? Ideally, I would like to use container managed persistence for this.

Using the Java Connector Architecture with EJBs Can I map an entity bean to an EIS for which a JCA resource manager exists? Ideally, I would like to use container managed persistence for this.

about EJB performance Where can I find articles about EJB performance?

Here are some links: An official white paper about EJB performance: http://developer.java.sun.com/developer/technicalArticles/ebeans/ejbperformance/ http://www.jdance.com/ejbperformance.shtm has s...more

Entity Beans with no primary keys. Is it possible to create an Entity Bean(CMP) based on table that does not have a primary key.

Entity Beans with no primary keys Is it possible to create an Entity Bean(CMP) based on table that does not have a primary key.

Where can I learn (more) about Java's support asynchronous and publish/subscribe messaging using JMS (Java Message Service)?

Check out the jGuru JMS FAQ.