RFR: 8322784: JFXPanel calls InputMethodRequests on wrong thread [v2]

[Andy Goryachev]

On Mon, 22 Jan 2024 22:13:42 GMT, Martin Fox <mfox at openjdk.org> wrote:

> this pattern is used throughout the code base.

that might be the case, but I think we should use the right pattern for the new code.
single-element array is an anachronism, especially in the case of multi-threaded code as here.

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PR Review Comment: https://git.openjdk.org/jfx/pull/1337#discussion_r1462494527