Java Hex to Int convertHexToInt(String hex)

Description

Wandle 4-stellige Hexadezimalkodierung in Nummer um (z.B.

License

Open Source License

Declaration

public static int convertHexToInt(String hex) 

Method Source Code

//package com.java2s;
/*/*from  w  ww .j av a  2 s  .  c o  m*/
 * File:     UtilitiesCollection.java
 * Project:  MPI Linguistic Application
 * Date:     07 February 2007
 *
 * Copyright (C) 2001-2007  Max Planck Institute for Psycholinguistics
 *
 * 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 of the License, 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

public class Main {
    /** Wandle 4-stellige Hexadezimalkodierung in Nummer um (z.B. 000a -> 10) */
    public static int convertHexToInt(String hex) {
        hex = hex.toLowerCase();

        char[] chex = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
        int[] c = { 0, 0, 0, 0 };

        for (int j = 0; j < 4; j++) {
            for (int i = 0; i < 16; i++) {
                if (hex.charAt(j) == chex[i]) {
                    c[j] = i;
                }
            }
        }

        int no = (c[3] + (16 * c[2]) + (16 * 16 * c[1]) + (16 * 16 * 16 * c[0]));

        return no;
    }
}

Related

1. convertHexBytesToInt(byte[] hex)
2. convertHexDigitAsInt(char c)
3. convertHexStringToInt(String hex)
4. convertHexStringToInt(String hexString)
5. convertHexToDec(String in)
6. hexChar2dec(char hex)
7. hexChar2Int(char ch)