Web Applications Defined

Web applications were originally introduced in the Servlet 2.2 specification, and are currently defined as follows by the Servlet 2.3 specification:

“A Web application is a collection of servlets, HTML pages, classes, and other resources that make up a complete application on a Web server.”

In other terms, a Web application is usually the layer between the Web client and the business layer, and acts as a bridge between them by passing the user requests to the business components and the processed response to the Web client.

A typical Web application consists of one or more of the following components:

  • Servlets— Read the input and perform simple operations, such as login and logout

  • JavaServer Pages— Used as presentation ...

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