private Class getCommandClass(HttpServletRequest request) {
        final String CLASS_PATH = "com.study.vital.webApp.commands.";

        Class result;
        final String commandClassName;

        if(request.getParameter(Attributes.COMMAND)==null){
            commandClassName = CLASS_PATH;
        } else {
            commandClassName = CLASS_PATH + request.getParameter(Attributes.COMMAND) + "Command";
        }

        try {
            result = Class.forName(commandClassName);
        } catch (Exception e) {
            result = IndexCommand.class;
        }
        return result;
    }