code: public static String intToIpAddress(int i) {
          StringBuilder buf = new StringBuilder(15);
          buf.append(i >> 24 & 0xff);
          buf.append('.');
          buf.append(i >> 16 & 0xff);
          buf.append('.');
          buf.append(i >> 8 & 0xff);
          buf.append('.');
          buf.append(i & 0xff);
          return buf.toString();
      }
docs: Converts a 32-bit integer into an IPv4 address.