Avoid allocating a substring to parse the response code in HttpURLConnection#getResponseCode, but instead use the Integer.parseInt overload that accepts String indices.
------------- Commit messages: - Optimize response code parsing in HttpURLConnection Changes: https://git.openjdk.org/jdk/pull/25245/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25245&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8357013 Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod Patch: https://git.openjdk.org/jdk/pull/25245.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/25245/head:pull/25245 PR: https://git.openjdk.org/jdk/pull/25245
