RFR: 8290036: Define and specify Runtime shutdown sequence [v4]

[Stuart Marks]

On Thu, 11 Aug 2022 07:23:28 GMT, David Holmes <dholmes at openjdk.org> wrote:

>> What you have is okay although I would have preferred if the sentence on the join method was in the previous paragraph rather as it fits with termination.
>
> Plus one on the join() bit. You could also argue for mentioning isAlive() here too.

Merged `join` sentence into previous paragraph per David's earlier suggestion. I didn't mention `isAlive` though, no need to complicate this further.

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PR: https://git.openjdk.org/jdk/pull/9437