RFR: 8358078: javap crashes with NPE on preview class file [v3]

[Chen Liang]

On Mon, 2 Jun 2025 20:06:34 GMT, Hannes Greule <hgreule at openjdk.org> wrote:

>> This change addresses a NPE in javap when trying to print a class with minorVersion != 0. With this change, we fall back to the methods that don't take a `ClassFileFormatVersion` in such case.
>
> Hannes Greule has updated the pull request incrementally with one additional commit since the last revision:
> 
>   make test failures easier to read

Thanks. Since this test is in tier1 langtools which is green, I think we can go ahead.

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PR Comment: https://git.openjdk.org/jdk/pull/25569#issuecomment-2942421568