Java Byte Create toByte(String hex)

Description

to Byte

License

Open Source License

Declaration

public static byte toByte(String hex) 

Method Source Code

//package com.java2s;
/*//from   w w w .j a  v  a 2s  . c  o m
 * Copyright (C) 2002-2006 Stefan Stiller
 *
 * 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 {
    public static byte toByte(String hex) {
        char[] lowChar = { '#', '0' };
        char[] highChar = { '#', '0' };

        int start = 0;
        if (hex.startsWith("#"))
            start = 1;
        else if (hex.startsWith("0x"))
            start = 2;

        if (hex.length() > start + 1) {
            lowChar[1] = hex.charAt(start + 1);
            highChar[1] = hex.charAt(start);
        } else if (hex.length() > start) {
            lowChar[1] = hex.charAt(start);
        }

        byte lowByte = Byte.decode(new String(lowChar)).byteValue();
        byte highByte = Byte.decode(new String(highChar)).byteValue();

        return (byte) (lowByte + highByte * 16);
    }
}

Related

1. toByte(Object value)
2. toByte(Object value)
3. toByte(short unsignedByte)
4. toByte(short value, boolean first)
5. toByte(String hex)
6. toByte(String hex)
7. toByte(String hexStr)
8. toByte(String hexString)
9. toByte(String str)