2.4. Enterprise JavaBeans

Enterprise JavaBeans are server-side components that encapsulate an application's business logic. An enterprise bean, for example, might calculate interest payments for a loan application or access a relational database for banking applications. A client that needs information calls business methods in the EJB, which may result in a remote invocation across a network.

EJBs have several benefits. First of all, they help bean developers write large applications with distributed components more easily. Recall that the EJB container provides system-level services to each bean deployed in a J2EE application server. This means bean developers do not have to handle complex issues such as transaction management, resource pooling, ...

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