What's an EJB?
Let's first understand the meaning of component and server component model, and then examine the meaning of EJB. A component is a piece of code that implements well-defined interfaces. Typically, it lives in a runtime environment and takes advantage of the services offered by the environment. For the component to live in a runtime environment, it must follow the rules of the runtime environment. This ensures the proper functioning of the runtime environment and the portability and scalability of the component. A component is not a complete application. An application consists of multiple components working together.
Generally, developing server-side objects is more difficult than writing graphical user interface (GUI) or client ...
Get Sams Teach Yourself EJB in 21 Days now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
