3.1. J2EE application

The Java 2 Enterprise Edition (J2EE) specification defines the building blocks and elements of a J2EE application that build an enterprise application. The specification also provides details on security related to the different elements.

The J2EE application consists of multiple modules and components; these elements are in connection with each other, and they communicate via certain protocols. This section only discusses the connection on the application level, without going into details about protocols.

Figure 3-1 depicts most of the elements in a J2EE application and their relation. You can find several arrows indicating connections between elements; these are the connections and connection groups that have to be secured ...

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