What is EJB role in J2EE?

EJB Interview Questions and Answers

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3. What is EJB role in J2EE?

EJB technology is the core of J2EE. It enables developers to write reusable and portable server-side business logic for the J2EE platform.

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Other Interview Questions

• What happens if remove( ) is never invoked on a session bean?
• What is the difference between session and entity beans? When should I use one or the other?
• Is there any way to read values from an entity bean without locking it for the rest of the transaction (e.g. read-only transactions)?
• What is the difference between a Server, a Container, and a Connector?
• Are we allowed to change the transaction isolation property in middle of a transaction?
• What is message-driven bean?
• What is the advantage of putting an Entity Bean instance from the Ready State to Pooled state
• Why is ejbFindByPrimaryKey mandatory?
• Does the container create a separate instance of the generated EJBHome and EJBObject classes?
• What is the difference between Message Driven Beans and Stateless Session beans?
• More...