RFR: 8317678: Fix up hashCode() for ZipFile.Source.Key [v9]

[Jaikiran Pai]

On Mon, 23 Oct 2023 09:14:06 GMT, Sean Coffey <coffeys at openjdk.org> wrote:

>> Fix up java.util.zip.ZipFile$Source hashCode() impl so that duplicate Source objects aren't created for the same zip file.
>
> Sean Coffey has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Update code comments

Finally, now that this PR only fixes a bug in the hashCode() and doesn't introduce any performance changing characteristics to the code, do you think the micro benchmark test update being proposed in this PR is needed? I don't have too much knowledge of `jmh` and it's a bit unclear to me if the introduction of this new `@Benchmark` method would interefere with the numbers of the existing `@Benchmark` method. I can spend some time on reading up `jmh` and then reviewing this micro benchmark if you think adding that benchmark is useful in context of this PR.

-------------

PR Comment: https://git.openjdk.org/jdk/pull/16115#issuecomment-1775060059