RFR: 8298318: (fs) APIs for handling filename extensions [v2]

[Brian Burkhalter]

On Mon, 20 Nov 2023 23:30:45 GMT, Brian Burkhalter <bpb at openjdk.org> wrote:

>> Add to `java.nio.file.Path` a method `getExtension` to retrieve the `Path`'s extension, and companion methods `removeExtension` and `addExtension`.
>
> Brian Burkhalter has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:
> 
>  - 8298318: Correct type in path.getExtension spec
>  - Merge
>  - 8298318: (fs) APIs for handling filename extensions

continue;

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PR Comment: https://git.openjdk.org/jdk/pull/16226#issuecomment-1874295535