Servlets provide the means through which Web Applications can be written in Java.
Web Applications allow a web site to be dynamic rather than straight static pages.
In other words, Servlets transform a web site with plain text and images into a rich interactive environment for the user. The attractiveness of such applications is that they are built on the foundations of the World Wide Web. Thus, these applications can be run anywhere in the world at any time and are completely cross platform. All you need to run them is a Web Browser. Gunther currently works for Barclays Capital in London, one of the leading global investment banks in Europe and has previously worked as a senior computer scientist in the Human Genome Project.