class ArrayUtils {

  public static byte[] concat(final byte[]... arrays) {
    int totalSize = 0;
    for (final byte[] array : arrays) {
      totalSize += array.length;
    }

    int startIndex = 0;
    final byte[] result = new byte[totalSize];
    for (final byte[] array : arrays) {
      System.arraycopy(array, 0, result, startIndex, array.length);
      startIndex += array.length;
    }

    return result;
  }

  private  ArrayUtils();

}