Java Programming For Web Development –Alliance Job Support:
Entry point to logic for handling a web request and return a Java representation of the web response provide by Servlets are Java classes.
JSP are a mechanism to combine HTML with logic written in Java. After they are deployed & compiled, JSP run as a Servlets, a Java object that is representing the response page and where they also take a web request and return. Typically, JSP & Servlets include logic to invoke the higher level business methods in a large project; they are part of the presentation layer of the application.
The core business functions are that these components can be used and changed independently of the presentation layer or layers are separated into a clearly defined set of interfaces, so, when using more than one interface. The Java EE framework and are an option to implement the business logic of an application included in Enterprise JavaBeans are also a key feature.
The presentation, business logic,& logic, and the logic to combine them is referred to as the model view controller pattern That separation is described later in this paper.