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

[Rémi Forax]

On Tue, 22 Mar 2022 04:38:15 GMT, ExE Boss <duke at openjdk.java.net> wrote:

> javac should be changed to allow fully qualified access to private inner classes in the permits clause of an enclosing class.

This is not how private works, private means accessible between the '{' and the '}' of the class.
The permits clause is declared outside of the '{' and the '}' of the class, thus a private member class is not visible from the permits clause.

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