The Design And Application Of J2EE Framework And Reusable Component

The economic benefits of framework and components have long been recognized. A J2EE framework is a reusable, semi-complete infrastructure that can be specialized to produce custom applications. It doesn't include user functionalities, but it provides some services for generic user applications. Here I have implemented a simple MVC framework as well as some reusable J2EE components. They provide development guidelines, standards, methodologies and tools for development and maintenance. Main benefits of using them are:1. Modularity– stable interfaces hide code implementation. Design or development changes cause alternations in well defined software components; this improves software quality and reduces and effort for code acknowledgment and maintenance.2. Reuse - the framework and components provide stable interfaces. You avoid to design, realize and test different components for similar and and recurrent solutions to applicative requirements. Reuse improves development productivity, software quality, performance, and software reliability and interoperability.3. Extensibility– framework and components can be modified and enhanced by developers, and components can be invoked flexible. These give high extensibility to the applications.In the end, I have worked out a j2ee project - the Information System of Xiamen Tour Bureau - by use my own framework and components and gained a lot of benefits. Also, In this system I have designed a dynamic tree menu system which can be act as all-purpose backup UI for most of j2ee project.