RFR: 8283092: JMX subclass permission check redundant with strong encapsulation [v3]

[Mandy Chung]

On Mon, 21 Mar 2022 20:19:03 GMT, Kevin Walls <kevinw at openjdk.org> wrote:

>> Removing permission checks which, in the presence of a Security Manager, would check for a RuntimePermission "className.subclass".  This was to prevent subclassing these classes, but is no longer necessary with strong encapsulation from modules.
>
> Kevin Walls has updated the pull request incrementally with one additional commit since the last revision:
> 
>   remove redundant constructors

Marked as reviewed by mchung (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/7827