I had to look up what formulare meant.
It's French for "application form", no?
Usually, your forward is defined in your Action class. The Action class is part of the Controller, not the View, so this is fine.
In the simplest of cases, the Action will always return "success" as a forward
return mapping.findForward("success");
and it will refer to a forward defined in struts-config. The forward is typically a way for the Controller(which Action is a part of) to decide which View(which is often a jsp or tile) to go to next.