Java Byte Array to Hex String bytesToHexString(byte[] bytes)

Description

Creates a string of hexadecimal representation of bytes from an array of bytes, separated by white spaces

License

Open Source License

Parameter

Parameter	Description
bytes	array of bytes

Return

string representation

Declaration

public static String bytesToHexString(byte[] bytes) 

Method Source Code

//package com.java2s;
/*/*from  w w  w.ja v  a2s .c om*/
 * The MIT License (MIT)
 * Copyright (c) 2014 Daniel Costa Gimenes
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this 
 * software and associated documentation files (the "Software"), to deal in the Software 
 * without restriction, including without limitation the rights to use, copy, modify, 
 * merge, publish, distribute, sublicense, and/or sell copies of the Software, and to 
 * permit persons to whom the Software is furnished to do so, subject to the following 
 * conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR 
 * PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE 
 * FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
 * DEALINGS IN THE SOFTWARE.
 */

public class Main {
    private static final int FIRST_4BITS_MASK = 0x0F;
    private static final int ONE_BYTE_MASK = 0xFF;
    private static final char SEPARATOR = ' ';
    private static final char[] hexChars = "0123456789ABCDEF".toCharArray();

    /**
     * Creates a string of hexadecimal representation of bytes from an array of
     * bytes, separated by white spaces
     * 
     * @param bytes
     *            array of bytes
     * @return string representation
     */
    public static String bytesToHexString(byte[] bytes) {
        if (bytes.length == 0) {
            return "";
        }
        char[] resultString = new char[bytes.length * 3];
        int byteValue;
        for (int i = 0; i < bytes.length; i++) {
            byteValue = bytes[i] & ONE_BYTE_MASK;
            resultString[i * 3] = hexChars[byteValue >>> 4]; // division by 16
            resultString[i * 3 + 1] = hexChars[byteValue & FIRST_4BITS_MASK];
            resultString[i * 3 + 2] = SEPARATOR;
        }
        return new String(resultString).trim();
    }
}

Related

1. bytesToHexString(byte[] bArray)
2. bytesToHexString(byte[] bArray)
3. bytesToHexString(byte[] bs)
4. bytesToHexString(byte[] buf)
5. bytesToHexString(byte[] byteArray)
6. bytesToHexString(byte[] bytes)
7. bytesToHexString(byte[] bytes)
8. bytesToHexString(byte[] bytes)
9. bytesToHexString(byte[] bytes)