About Portlet Applications
A portlet application project is a container for managing one or more portlets. After creating the portlet application project, you can create and configure one or more portlets within it.
After creating a portlet, you can add one or more portlet views, and you can include a dynamic web application in a portlet view. You can view the user interface of each portlet view with the Preview tab of the editor, which provides a static HTML version of the view.