VigilantBean bean = (VigilantBean) RenderUtils.getViewState("selectGroup").getMetaObject() .getObject();
IViewState viewState = RenderUtils.getViewState("selectGroup"); if(viewState==null) { return prepareMap(mapping, form, request, response); }  VigilantBean bean = (VigilantBean) viewState.getMetaObject().getObject();
    public ActionForward displayMap(ActionMapping mapping, ActionForm form, HttpServletRequest request,            HttpServletResponse response) throws Exception {        VigilantBean bean = (VigilantBean) RenderUtils.getViewState("selectGroup").getMetaObject()                .getObject();        prepareBean(bean, request, bean.getExecutionYear());        RenderUtils.invalidateViewState("selectGroup");        return mapping.findForward("displayConvokeMap");    }