String realPath = request.getRealPath("WEB-INF/classes/com/properties/devicetype.properties");

        Properties props = new Properties();

        ArrayList al = new ArrayList();

            try {

             InputStream in = new BufferedInputStream (new FileInputStream(realPath));

             props.load(in);

                Enumeration en = props.propertyNames();

                 while (en.hasMoreElements()) {

                  String key = (String) en.nextElement();

                        String Property = props.getProperty (key);

                        al.add(Property);

                        //System.out.println(key+Property);

                    }

            } catch (Exception e) {

             e.printStackTrace();

            }