I have developed Login screen containing Username and Password using GWT. but I am not getting how to use it with Servlet or Web. How to retrieve values from the screen because screen desingning is done by using java code /gwt api. so what role my loginservlet should play.. how to call my loginservlet. there is submit button on screen. so where should my action go. how should I retrieve the values from screen to servlet. e.g - request.getParameter(???); how should I give the name for my fields on screen for username and password ?