RFR: 8341982: Simplify JButton/bug4323121.java [v8]

[Alexey Ivanov]

On Fri, 18 Oct 2024 22:36:33 GMT, Sergey Bylokhov <serb at openjdk.org> wrote:

>> This test follows the same pattern that I used in https://github.com/openjdk/jdk/pull/21474:
>> 
>> https://github.com/openjdk/jdk/pull/21474/files#diff-2a8cee50408407d7e24de4cb85f0921cfc5db7c215d3b29cf101a4050323e9a9R92
>
>> To ensure all the events in the queue are handled, I added `robot.waitForIdle()`.
> 
> This will flush events which were posted after the windows gained focus, but before the patch the test flushed all events (including event to show the window which might be asynchronous). My point is that this operation might be longer that 1 second(one of the reason we have all that deleyas). So we should waitForIdle first, then wait via delay or other sync_ops.

> @mrserb Are any more concerns with the updated code in `JButton/bug4323121.java`?

@mrserb Is there anything else you've got concerns about? If not, I'll integrate the PR.

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PR Review Comment: https://git.openjdk.org/jdk/pull/21475#discussion_r1866479254