Enterprise Java Beans EJB

Enterprise Java Beans EJB

Enterprise Java Beans (EJB) Introduction to EJB and Its Types Enterprise JavaBeans (EJB) is a server-side component architecture for Java EE (now Jakarta EE) applications. EJBs are used to build scalable, distributed, and transactional applications. They allow developers to focus on business logic while abstracting away the complexities of system-level concerns such as transaction management, security, and concurrency. EJB simplifies the development of enterprise applications by providing services like: Transaction Management : EJBs manage transactions automatically, ensuring data consistency and integrity. Security : EJBs provide declarative security, enforcing access control to methods based on roles and permissions. Concurrency : EJBs can handle multiple clients concurrently, offering built-in management of threads and synchronization. Persistence : EJBs can integrate seamlessly with Java Persistence API (JPA) for managing data in relational databases. Messaging : EJBs can interact with messaging systems (e.g., JMS) for communication in distributed systems. EJBs run within an EJB container, which is part of the Java EE application server (such as Wildfly, Glassfish, etc.). The container provides lifecycle management, handles transactions, security, and other infrastructure concerns. Types of Enterprise JavaBeans EJBs are classified into three major types based on their functionality and the way they interact with the client applications:

Updated July 15, 2026