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Oracle WebLogic Server 11g Administration Handbook by Sam Alapati

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Deployment Descriptors, Annotations, and Deployment Plans

Once a developer has written the classes that contain the presentation and services that are the heart of the application, the next step is to provide information to the application server container as to how to interpret those classes. The deployment descriptors and annotations provide these mechanisms.

A deployment descriptor contains environment configuration information as well as product-specific configuration details. You can define the deployment descriptor values necessary for a deployment in a domain in several ways: Java EE deployment descriptors, which are historical mechanisms based on external XML files and date back to the origins of Java EE, WebLogic Server deployment descriptors, ...

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