Displaying existing web interface of an application Creating a portlet with a more granular level without relying on JSR 168 portlet API is done by embedding the web interface of an application to an IFrame (Inline Frame) portlet. An IFrame portlet invokes an URL inside an IFrame within the portlet window. It gets content referenced by an URL and displays it in a portlet. IFrame portlets can be downloaded freely or else they can be found already integrated in many web portals. Thus a user can use a portlet integrated to a portal or either create a custom IFrame portlet. Basically these portlets contain following jsp pages: --configuration.jsp (for edit mode) -This is for adding configuration values such as source URL of directing web page, look and feel attributes and authenticating attributes. --view.jsp (for view mode) - This makes possible to view the embedded web page inside the current portal page with the help of the functions in the portlet namespace. --proxy.jsp...