Step into the J2EE architecture and process

Develop complete J2EE solutions with an eight-step cycle

In the commercial world, we use Java 2 Enterprise Edition (J2EE) to solve business problems, to develop commercial software, or to provide contract services to other businesses' projects. If a company wants to build an e-business Website using a multitiered architecture, it usually involves managers, architects, designers, programmers, testers, and database experts throughout the development lifecycle.

For different parties to work efficiently and effectively, they often need a software development process. Some classic development processes include the waterfall model, rapid application development (RAD), and extreme programming. In this article, we will focus on a popular software engineering process, the Rational Unified Process (RUP). RUP provides a disciplined approach to assigning tasks and responsibilities to different roles. Its goal ensures we produce high-quality software that meets user needs within a predictable schedule and budget.

I like to use RUP for J2EE development for three reasons. First, RUP is architecture-centric; it develops an executable architecture prototype before committing resources for full-scale development. Second, RUP is iterative and component-based. The architecture baseline often includes a framework or infrastructure to facilitate adding components through iterations to customize and extend a system's functionality without affecting the rest of the system. Third, RUP employs an industry-standard language, UML, to visually model a system's architecture and components. RUP has four different development phases: inception, elaboration, construction, and transition. This article, however, covers eight essential activities involved in J2EE development from a technical perspective in a manner that maintains the architectural focus.

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