JSP model 1 architecture

[1] In Model 1, a request is made to a 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.

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.