RFR: JDK-8289106: Add model of class file versions to core reflection [v6]

[Roger Riggs]

On Wed, 10 Aug 2022 01:54:56 GMT, Joe Darcy <darcy at openjdk.org> wrote:

>> JDK-8289106: Add model of class file versions to core reflection
>
> Joe Darcy 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 18 additional commits since the last revision:
> 
>  - Implement code review feedback.
>  - Update ClassFileVersionTest.java.
>  - Merge branch 'master' into JDK-8289106
>  - Appease jcheck.
>  - Finish more precise versioned location support; udpate tests.
>  - Partial implementation of version-depdendent locations() with tests.
>  - Merge branch 'master' into JDK-8289106
>  - Merge branch 'master' into JDK-8289106
>  - Add method to map from major class file version.
>  - Merge branch 'master' into JDK-8289106
>  - ... and 8 more: https://git.openjdk.org/jdk/compare/b9293502...2e6dfc8e

Looks good.

src/java.base/share/classes/java/lang/reflect/ClassFileFormatVersion.java line 259:

> 257:     RELEASE_20(64);
> 258: 
> 259:     private int major;

Could be final?

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Marked as reviewed by rriggs (Reviewer).

PR: https://git.openjdk.org/jdk/pull/9299