Converts a byte array into a hexadecimal string

     



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 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * 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.
 *
 * Neither the name of the HSQL Development Group nor the names of its
 * contributors may be used to endorse or promote products derived from this
 * software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS 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 HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
 * OR 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
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/**
 * Collection of static methods for converting strings between different formats
 * and to and from byte arrays.
 * <p>
 * 
 * Includes some methods based on Hypersonic code as indicated.
 * 
 * @author Thomas Mueller (Hypersonic SQL Group)
 * @author Fred Toussi (fredt@users dot sourceforge.net)
 * @version 1.9.0
 * @since 1.7.2
 */
public class Main {

  private static final byte[] HEXBYTES = { (byte) '0', (byte) '1', (byte) '2', (byte) '3',
      (byte) '4', (byte) '5', (byte) '6', (byte) '7', (byte) '8', (byte) '9', (byte) 'a',
      (byte) 'b', (byte) 'c', (byte) 'd', (byte) 'e', (byte) 'f' };

  /**
   * Converts a byte array into a hexadecimal string
   * 
   * 
   * @param b
   *          byte array
   * 
   * @return hex string
   */
  public static String byteArrayToHexString(byte[] b) {

    int len = b.length;
    char[] s = new char[len * 2];

    for (int i = 0, j = 0; i < len; i++) {
      int c = ((int) b[i]) & 0xff;

      s[j++] = (char) HEXBYTES[c >> 4 & 0xf];
      s[j++] = (char) HEXBYTES[c & 0xf];
    }

    return new String(s);
  }
}

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Converts a byte array into a hexadecimal string : Byte Array « File Input Output « Java

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