RFR: 8286269: [java.desktop] Use newer instanceof language feature wherever possible

Fri May 6 04:00:25 UTC 2022

On Fri, 6 May 2022 03:05:30 GMT, Julian Waters <jwaters at openjdk.org> wrote:

>> Keeping open.
>
> @SWinxy Gratz on getting the contributor status! I've created an issue on the tracker for you, please rename the title of this PR to just 8286269 and the automated system should take care of the rest and send your PR for review!

@TheShermanTanker You are a legend! Thank you for all this. I've added it to #7096 and #7097, too, though I wanna double check that my changes in #7098 are right before doing it to that one. I have time tomorrow to merge the conflicts for this PR. Can't thank you enough, btw. You have been super helpful, being there when it feels like I'm screaming into the void.

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PR: https://git.openjdk.java.net/jdk/pull/7000