In Java MVC 1 means that servlet act as controller as well as view means it deals the business rules and view part .So web designer and java programmer cannot work at a time and it is time consuming .But in MVC 2 arch the three parts are responsible for three diff functionalities and developers can work simulteaneously on three parts.

View-JSP

Controller-Servlets

Model-java bean

Here controllerdeals with the authentication and business logic purposes and

View is dedicatd to user interface

Model is reponsible for data base retrieval purpose.

I hope this will help you.If you have any doubts let me know.

-Ajay

If u dont mind pls explain me in detail

actually MVC 1 is a misnomer. is also called Model 1 architecture this refersto the ancient archetecture :) wer ppl had vereything stuffed into servlet ( view and business logic related code ) and a simple java bean did the job of talking to DB and persisting the data.

MVC-2 ( also called Model 2) is in the true sense a MVC architecture wer view is JSP Servlet is the controller and bean is the persistence.