Java - Reconocer DispatchAction

No me reconoce el DispatchAction, que pudeo hacer..

public class SistemaAction extends DispatchAction{

public ActionForward searchByOptions(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) throws Exception{
SistemaForm sf = (SistemaForm) form;
Sistema s = new Sistema();
BeanUtils.copyProperties(s,sf);
SistemaFacade facade = new SistemaFacade();
Collection sistemas = facade.searchAll(s);
request.setAttribute("sistemas", sistemas);
return (mapping.findForward("sistemas"));
}
public ActionForward searchSistema(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
SistemaForm sf = (SistemaForm)form;
SistemaFacade facade = new SistemaFacade();
Sistema sistema = facade.searchSistema(sf.getUser());
request.setAttribute("sistema", sistema);
return (mapping.findForward("update"));
}
public ActionForward update(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) throws Exception{
SistemaForm sf = (SistemaForm) form;
Sistema s = new Sistema();
BeanUtils.copyProperties(s,sf);
SistemaFacade facade = new SistemaFacade();
facade.update(s);
return (mapping.findForward("success"));
}
public ActionForward create(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) throws Exception {
SistemaForm sf = (SistemaForm)form;
Sistema s = new Sistema();
BeanUtils.copyProperties(s,sf);
SistemaFacade facade = new SistemaFacade();
facade.create(s);
return (mapping.findForward("success"));
}
}