Here you can find the source of fromHexString(String in)
| Parameter | Description |
|---|---|
| in | The hex string to be converted |
public static byte[] fromHexString(String in)
//package com.java2s; /*/* w w w .j a va2s . c o m*/ * ==================================================================== * JAFFA - Java Application Framework For All * * Copyright (C) 2002 JAFFA Development Group * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * Redistribution and use of this software and associated documentation ("Software"), * with or without modification, are permitted provided that the following conditions are met: * 1. Redistributions of source code must retain copyright statements and notices. * Redistributions must also contain a copy of this document. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. The name "JAFFA" must not be used to endorse or promote products derived from * this Software without prior written permission. For written permission, * please contact mail to: jaffagroup@yahoo.com. * 4. Products derived from this Software may not be called "JAFFA" nor may "JAFFA" * appear in their names without prior written permission. * 5. Due credit should be given to the JAFFA Project (http://jaffa.sourceforge.net). * * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * ==================================================================== */ public class Main { private static final String HEX_STR = "0123456789ABCDEF"; /** Convert a String of hex values into a byte[]. Each two characters in the string * represent 1 byte. * @param in The hex string to be converted * @return A byte[] of the real data */ public static byte[] fromHexString(String in) { byte[] data = new byte[in.length() / 2]; for (int i = 0, j = 0; i < in.length();) { byte hi = fromHex(in.charAt(i++)); byte lo = fromHex(in.charAt(i++)); data[j++] = (byte) ((hi << 4) + lo); } return data; } /** Utility function to convert a hex character to a number. * The character must be '0'..'F', the byte will be 0-15. * @param c The character to convert * @return The number as a byte */ public static byte fromHex(char c) { return (byte) HEX_STR.indexOf(c); } }