RFR: 8309853: StructuredTaskScope.join description improvements

[Joe Darcy]

On Mon, 12 Jun 2023 14:32:07 GMT, Alan Bateman <alanb at openjdk.org> wrote:

> StructuredTaskScope's class description introduces the join method as waiting for all subtasks to finish but the API docs for join/joinUntil are phrased in terms of waiting for all threads to finish. ShutdownOnXXX join/joinUntil inherit this description but would be clearer if their description said they wait until all subtasks finished or a subtask to succeed or fail.

Marked as reviewed by darcy (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/14419#pullrequestreview-1491208534