17-04-2012

Modern Programming Language

Web Container & Web Applications

Web applications are server side applicationsThe most essential requirement for server

side application development are: A programming model and an API Server Side runtime support Deployment Support

Web Container & Web Applications

To meet these requirements when building and running web applications, the j2ee specification provides the following Java servlets and Java Server Pages

In J2EE java servlets and java server pages are called web components

Web Applications It could be a collection of java servlets, jsp pages, helper

classes, class libraries, static resources, documents and images

Web container A web container is essentially a java runtime that provides an

implementation of java servlet API and facilities for JSP pages

A packaging structure and deployment descriptor The J2EE specification defines a packaging structure for

web applications. The specification also defines a deployment descriptor for each web application

The deployment descriptor is an XML file that allows the customization of web applications at deployment time

Java Servlets

Java servlets are small, platform independent server side programs that programmatically extend the functionality of the web server

The java servlet API provides a simple framework for building application on such web servers