WHAT IS EJB?
Enterprise JavaBeans are software component models, their purpose is to build/support
enterprise specific problems. EJB - is a reusable server-side software component.
Enterprise JavaBeans facilitates the development of distributed Java applications,enterprise specific problems. EJB - is a reusable server-side software component.
providing an object-oriented transactional environment for building distributed, multi-tier
enterprise components. An EJB is a remote object, which needs the services of an EJB
container in order to execute.
The primary goal of a EJB is WORA (Write Once Run Anywhere). Enterprise JavaBeans
takes a high-level approach to building distributed systems. It frees the application
developer and enables him/her to concentrate on programming only the business logic
while removing the need to write all the “plumbing” code that's required in any enterprise
application. For example, the enterprise developer no longer needs to write code that
handles transactional behaviour, security, connection pooling, networking or threading.
The architecture delegates this task to the server vendor.
takes a high-level approach to building distributed systems. It frees the application
developer and enables him/her to concentrate on programming only the business logic
while removing the need to write all the “plumbing” code that's required in any enterprise
application. For example, the enterprise developer no longer needs to write code that
handles transactional behaviour, security, connection pooling, networking or threading.
The architecture delegates this task to the server vendor.
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