RFR: 8341982: Simplify JButton/bug4323121.java [v2]

[Alexey Ivanov]

On Mon, 14 Oct 2024 15:55:34 GMT, Abhishek Kumar <abhiscxk at openjdk.org> wrote:

>> I removed the unneeded listener and inlined creation of the event handler.
>> 
>> Thus, I kept the current structure of test code. I prefer it this way for consistency with `JButton/bug4490179.java` in https://github.com/openjdk/jdk/pull/21474. Both tests are really similar, and I think consistent coding helps.
>
> Ok...

If anyone else thinks using an anonymous class here makes the code shorter and cleaner, I'll go for it.

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PR Review Comment: https://git.openjdk.org/jdk/pull/21475#discussion_r1799761004