MVC 2

Model (EJB, Plain Java Classes)
  • Encapsulates business logic and application state.
View (JSP, JavaBeans, SWING, Custom Tags, etc )
  • Renders the model & has only display logic.
  • Sends user actions to the controller
  • Allows controller to select a view.
Controller (Servlet, Struts Action etc)
  • controls application behavior
  • Maps user actions to model.
  • selects view for response.
  • usually one for each functionality.