code: public static boolean contains(byte[] array, byte value) {
  		if (array != null) {
  			for (byte data : array) {
  				if (data == value) {
  					return true;
  				}
  			}
  		}
  		return false;
  	}
docs: Checks that a byte array contains some specific byte
  @param array The array to search in
  @param value The byte to search for
  @return true if the array contains spcified value