RFR: 8355652: Parse ClassFileFormatVersion from ClassFileVersion [v2]

[Chen Liang]

On Mon, 21 Jul 2025 20:48:12 GMT, simon <duke at openjdk.org> wrote:

>>> Maybe it can be reused in another points?
>> 
>> ClassFileFormatVersion and Optional are more user-oriented classes; internal code don't really ever use these two types, so I don't think you need to extract this logic specifically.
>
> I mean about the rule the version - similar to isSupportedClassFileVersion method

I still don't think so. I intentionally proposed the original RFE so we have one place where we can consolidate this handling, and that place should be here instead of some other place.

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PR Review Comment: https://git.openjdk.org/jdk/pull/26406#discussion_r2220377268