int length = end - start;
    if (length <= 0 || length > 3) {
      throw new NumberFormatException();
    }
    // Disallow leading zeroes, because no clear standard exists on
    // whether these should be interpreted as decimal or octal.
    if (length > 1 && ipString.charAt(start) == '0') {
      throw new NumberFormatException();
    }
    int octet = 0;
    for (int i = start; i < end; i++) {
      octet *= 10;

                return Array.get(value, index);
            }

            if (value instanceof List list) {
                return list.get(index);
            }
        } catch (NumberFormatException | IndexOutOfBoundsException e) {
            return null;
        }

        final String message = String.format(

                    int patch = Integer.parseInt(parts[2]);
                    return patch > 0;
                }
            }
        } catch (NumberFormatException e) {
            // If we can't parse it, assume it's not newer
            return false;
        }

        return false;
    }

    /**

  private static @Nullable Double referenceTryParse(String input) {
    if (input.trim().length() < input.length()) {
      return null;
    }
    try {
      return Double.valueOf(input);
    } catch (NumberFormatException e) {
      return null;
    }
  }

  @GwtIncompatible // Doubles.tryParse
  private static void checkTryParse(String input) {
    Double expected = referenceTryParse(input);

          throw ProtocolException(
            "expected chunk size and optional extensions" +
              " but was \"$bytesRemainingInChunk$extensions\"",
          )
        }
      } catch (e: NumberFormatException) {
        throw ProtocolException(e.message)
      }

      if (bytesRemainingInChunk == 0L) {
        hasMoreChunks = false
        val trailers = headersReader.readHeaders()

                        snapshot.setBuildNumber(Integer.parseInt(matcher.group(3)));
                        artifact.addMetadata(new SnapshotArtifactRepositoryMetadata(artifact, snapshot));
                    } catch (NumberFormatException e) {
                        logger.warn("Invalid artifact version " + artifact.getVersion() + ": " + e.getMessage());
                    }
                }
            }
        }
    }

        if (result < 0L || result > Integer.MAX_VALUE || line.isNotEmpty()) {
          throw IOException("expected an int but was \"$result$line\"")
        }
        return result.toInt()
      } catch (e: NumberFormatException) {
        throw IOException(e.message)
      }
    }

    /**
     * Returns true if none of the Vary headers have changed between [cachedRequest] and
     * [newRequest].
     */

    Iterable<Integer> iterable = FluentIterable.from(input).transform(new IntegerValueOfFunction());

    Iterator<Integer> resultIterator = iterable.iterator();
    resultIterator.next();

    assertThrows(NumberFormatException.class, () -> resultIterator.next());
  }

  private static final class StringValueOfFunction implements Function<Integer, String> {
    @Override
    public String apply(Integer from) {

    assertThat(converter.convert("#0000FF")).isEqualTo(255);
    assertThat(converter.convert("0666")).isEqualTo(438);
  }

  public void testStringConverter_convertError() {
    assertThrows(NumberFormatException.class, () -> Shorts.stringConverter().convert("notanumber"));
  }

  public void testStringConverter_nullConversions() {
    assertThat(Shorts.stringConverter().convert(null)).isNull();

                            "Invalid threads value: '" + threadConfiguration + "'. Value must be positive.");
                }
                return threads;
            }
        } catch (NumberFormatException e) {
            throw new IllegalArgumentException("Invalid threads value: '" + threadConfiguration
                    + "'. Supported are int and float values ending with C.");
        }
    }