RFR: JDK-8283416: Update java.lang.invoke.MethodHandle to use sealed classes [v2]

[Mandy Chung]

On Thu, 24 Mar 2022 18:58:43 GMT, Joe Darcy <darcy at openjdk.org> wrote:

>> Small refactoring to use sealed classes in the MethodHandle implementation hierarchy.
>> 
>> DelegatingMethodHandle is non-sealed rather than sealed since it has two subclasses, one defined as a nested class and only a separate type in the same package. The permits clause does not allow listed those two kinds of subclasses.
>> 
>> Please also review the corresponding CSR https://bugs.openjdk.java.net/browse/JDK-8283434
>
> 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 three additional commits since the last revision:
> 
>  - Respond to review feedback.
>  - Merge branch 'master' into JDK-8283416
>  - JDK-8283416: Update java.lang.invoke.MethodHandle to use sealed classes

Looks good.

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Marked as reviewed by mchung (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/7881