Sreeni,
The navigation in a Struts application is defined in your struts-config.xml file. What that means is you define all the possible places your users can go. For example:
From: login.jsp
To: manage.jsp
To: loginFailed.jsp
From: manage.jsp
To: addUser.jsp
To: editUser.jsp
To: removeUser.jsp
and so on. Because all the flow is pre-determined like this, it’s possible to visualize the “flow” of a Struts application using MyEclipse. To see how the user will move through a Struts web application. This is what the Struts Flow Diagramming feature does.
Hope that helps.