HexIntConverter.java

/**
 *
 * Copyright (c) 2009-2016 Freedomotic team http://freedomotic.com
 *
 * This file is part of Freedomotic
 *
 * This Program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation; either version 2, or (at your option) any later version.
 *
 * This Program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License along with
 * Freedomotic; see the file COPYING. If not, see
 * <http://www.gnu.org/licenses/>.
 */
package com.freedomotic.plugins.devices.flyport;

/**
 *
 * @author Mauro Cicolella
 */
public class HexIntConverter {

    /**
     * Takes in input an int and returns a String representing its hex value Eg:
     * input= 42 returns "2a". Alpha characters are lower case
     *
     * @param integer
     * @return its corresponding int
     */
    public static String convert(int integer) {
        String hex = null;
        try {
            hex = Integer.toHexString(integer);
        } catch (Exception e) {
            return null;
        }
        return hex;
    }

    /**
     * Takes in input an hex string eg: "2A" or "2a" and returns the int 42. If
     * the String in input is not a valid hex a NumberFormatException is
     * throwed.
     *
     * @param hex
     * @return the input value converted to int
     */
    public static int convert(String hex) {
        int intValue;
        try {
            intValue = Integer.parseInt(hex, 16);
        } catch (NumberFormatException numberFormatException) {
            return -1;
        }
        return intValue;
    }

    private HexIntConverter() {
    }
}