Model 1 2830704 218623557 2008-06-11T13:33:14Z Keithh 1180430 added justification for Model 1 use :''This article is about the Java design model. For the arcade board, see [[Sega Model 1]].'' In the design of [[Java (programming language)|Java]] [[Web application]]s, there are two commonly-used design models, referred to as '''Model 1''' and [[Model 2]]. In Model 1, a request is made to a [[JavaServer Pages|JSP]] or [[servlet]] and then that JSP or servlet handles all responsibilities for the request, including processing the request, validating data, handling the business logic, and generating a response. The Model 1 architecture is commonly used in smaller, simple task applications due to its ease of development. Although conceptually simple, this architecture is not conducive to large-scale application development because, inevitably, a great deal of functionality is duplicated in each JSP. Also, the Model 1 architecture unnecessarily ties together the business logic and presentation logic of the application. Combining business logic with presentation logic makes it hard to introduce a new 'view' or access point in an application. For example, in addition to an [[HTML]] interface, you might want to include a [[Wireless Markup Language]] (WML) interface for wireless access. In this case, using Model 1 will unnecessarily require the duplication of the business logic with each instance of the presentation code. == See also == *[[Model 2]] [[Category:Software design patterns]] [[Category:Software architecture]]