Understanding Enterprise JavaBeans (EJB) and its Types in J2EE

In Java 2 Platform, Enterprise Edition (J2EE), Enterprise JavaBeans (EJB) is a server-side component architecture that simplifies the development of distributed, transactional, and secure Java applications.

Focus Keyword: Enterprise JavaBeans (EJB)

Types of Enterprise JavaBeans (EJB) in J2EE:

1. Session Beans: Used to model a specific business function or process. There are two types - stateful and stateless beans.
2. Entity Beans: Represents business data as objects. Two types are container-managed persistence (CMP) and bean-managed persistence (BMP).
3. Message-Driven Beans: Used to process messages asynchronously. They are triggered by the arrival of JMS messages.

Each type of EJB serves a specific purpose within the J2EE architecture, offering flexibility and scalability for enterprise applications.

Overall, Enterprise JavaBeans (EJB) in J2EE provide a robust framework for developing scalable and distributed applications in Java, enhancing productivity and maintainability.