final String selectCourses = request.getParameter("selectCourses"); if (selectCourses != null) { request.setAttribute("selectCourses", selectCourses); }
final String selectCourses = request.getParameter("selectCourses"); if (selectCourses != null) { request.setAttribute("selectCourses", selectCourses);
	private void checkParameter(HttpServletRequest request) {		final String selectCourses = request.getParameter("selectCourses");		if (selectCourses != null) {			request.setAttribute("selectCourses", selectCourses);		}	}