Java Byte Array Create toByteArray(String source)

Description

Parses a string containing hex numbers to a byte array.

License

Open Source License

Parameter

Parameter	Description
source	source string

Return

byte array from the parsed data

Declaration

public static byte[] toByteArray(String source) 

Method Source Code

//package com.java2s;
/*//  ww w.  j  a  va  2s.co m
 * Copyright (C) 2014 Christopher Metter
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

public class Main {
    /**
     * Parses a string containing hex numbers to a byte array.
     *
     * @param source source string
     * @return byte array from the parsed data
     */
    public static byte[] toByteArray(String source) {
        String s = source.replaceAll(" |\n", "");
        byte[] b = new byte[s.length() / 2];
        if ((s.length() % 2) != 0) {
            throw new IllegalArgumentException("need even number of hex double digits [" + s.length() + "]");
        }
        for (int i = 0; i < s.length(); i += 2) {
            String q = s.substring(i, i + 2);
            b[i / 2] = (byte) Integer.parseInt(q, 16);
        }
        return b;
    }
}

Related

1. toByteArray(String hexString)
2. toByteArray(String hexString)
3. toByteArray(String hexString)
4. toByteArray(String map)
5. toByteArray(String s)
6. toByteArray(String str)
7. toByteArray(String str)
8. toByteArray(String str)
9. toByteArray(String str, String separator)