Web Application Lifecycle
A web application consists of web components; static resource files, such as images and cascading style sheets (CSS); and helper classes and libraries. The web container provides many supporting services that enhance the capabilities of web components and make them easier to develop. However, because a web application must take these services into account, the process for creating and running a web application is different from that of traditional stand-alone Java classes.
The process for creating, deploying, and executing a web application can be summarized as follows:
Developing web component code is covered in the later chapters. Steps 2 through 4 are expanded on in the following sections and illustrated with a Hello, World–style, presentation-oriented application. This application allows a user to enter a name into an HTML form and then displays a greeting after the name is submitted.
The Hello application contains two web components that generate the greeting and the response. This chapter discusses the following simple applications:
The applications are used to illustrate tasks involved in packaging, deploying, configuring, and running an application that contains web components.