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JBoss AS 5 Development by Francesco Marchioni

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Developing Enterprise JavaBeans

Java EE applications are usually considered to be three-tiered applications, as they are distributed over three layers.

Developing Enterprise JavaBeans

This diagram depicts a view of the three-layer architecture with the associated components. Here's a synthetic explanation:

  • Presentation Tier: Built with dynamic pages and application clients, this layer is able to generate the user interface of the application.
  • Business Tier: Also known as the middle tier, this layer contains the business logic of the application. All the business logic is centralized into this tier as opposed to client/server applications where the business logic is scattered between ...

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