*/
  public static BaseEncoding base32Hex() {
    return BASE32_HEX;
  }

  private static final BaseEncoding BASE16 = new Base16Encoding("base16()", "0123456789ABCDEF");

  /**
   * The "base16" encoding specified by <a href="http://tools.ietf.org/html/rfc4648#section-8">RFC
   * 4648 section 8</a>, Base 16 Encoding. (This is the same as the base 16 encoding from <a

   * "12AB" is the four hexadecimal digits representing the 16-bit code unit.
   */
  private static String showCharacter(char c) {
    String hex = "0123456789ABCDEF";
    char[] tmp = {'\\', 'u', '\0', '\0', '\0', '\0'};
    for (int i = 0; i < 4; i++) {
      tmp[5 - i] = hex.charAt(c & 0xF);
      c = (char) (c >> 4);
    }
    return String.copyValueOf(tmp);
  }

   * "12AB" is the four hexadecimal digits representing the 16-bit code unit.
   */
  private static String showCharacter(char c) {
    String hex = "0123456789ABCDEF";
    char[] tmp = {'\\', 'u', '\0', '\0', '\0', '\0'};
    for (int i = 0; i < 4; i++) {
      tmp[5 - i] = hex.charAt(c & 0xF);
      c = (char) (c >> 4);
    }
    return String.copyValueOf(tmp);
  }