RFR: 8355652: Parse ClassFileFormatVersion from ClassFileVersion

[Chen Liang]

On Mon, 21 Jul 2025 16:05:59 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.

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PR Review Comment: https://git.openjdk.org/jdk/pull/26406#discussion_r2220284604