RFR: 8344943: Mark not subclassable classes final in java.base exported classes

[Eirik Bjørsnøs]

On Tue, 26 Nov 2024 13:04:41 GMT, Eirik Bjørsnøs <eirbjo at openjdk.org> wrote:

> Please review this PR which adds the `final` modifier to non-subclassable classes in `java.base`.
> 
> The classes were identified using an automated analysis. See CSR for details.
> 
> Besides simply adding the `final` access modifier, the PR:
> 
> * Updates a note in `java.lang.constant.DynamicCallSiteDesc` to not reference subtypes. See CSR for discussion.
> * Removes the class `java.lang.Runtime` from the test `test/jdk/jdk/internal/reflect/CallerSensitive/CheckCSMs.java`
> * Updates the copyright year of affected source files

Now that the CSR for this change is "final-ly" approved, I'm marking this PR ready for review.

Since the CSR approval, the PR has merged with a recent master and the copyright headers are updated for 2025.

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PR Comment: https://git.openjdk.org/jdk/pull/22389#issuecomment-2596848026