System.out.println("### Calling service: ReadClasses");
	public ActionForward listClasses(		ActionMapping mapping,		ActionForm form,		HttpServletRequest request,		HttpServletResponse response)		throws Exception {		//HttpSession session = request.getSession(false);		InfoExecutionPeriod infoExecutionPeriod =			(InfoExecutionPeriod) request.getAttribute(				SessionConstants.EXECUTION_PERIOD);		InfoCurricularYear infoCurricularYear =			(InfoCurricularYear) request.getAttribute(				SessionConstants.CURRICULAR_YEAR);		Integer curricularYear = infoCurricularYear.getYear();		InfoExecutionDegree infoExecutionDegree =			(InfoExecutionDegree) request.getAttribute(				SessionConstants.EXECUTION_DEGREE);		Object argsLerTurmas[] =			{ infoExecutionDegree, infoExecutionPeriod, curricularYear };		System.out.println("### Calling service: ReadClasses");		List classesList =			(List) ServiceUtils.executeService(				SessionUtils.getUserView(request),				"LerTurmas",				argsLerTurmas);		System.out.println("### Classes List size = " + classesList.size());		if (classesList != null && !classesList.isEmpty())			request.setAttribute(CLASS_LIST_KEY, classesList);		request.removeAttribute(SessionConstants.EXECUTION_COURSE);		request.removeAttribute(SessionConstants.CLASS_VIEW);		return mapping.findForward("listClasses");	}