code: public static String bytesToString(byte[] bytes, int offset, int length) {
          return new String(bytes, offset, length, UTF8_CHARSET);
      }
docs: Creates a UTF8_CHARSET string from a byte array.
  
  @param bytes  the byte array.
  @param offset the index of the first byte to decode
  @param length the number of bytes to decode
  @return the string created from the byte array.