RFR: 8316285: Opensource JButton manual tests

[Tejesh R]

On Wed, 20 Sep 2023 03:25:25 GMT, Abhishek Kumar <abhiscxk at openjdk.org> wrote:

> Few closed JButton swing manual test converted to automated and open sourced.

test/jdk/javax/swing/JPopupMenu/bug4197019.java line 47:

> 45: public class bug4197019 {
> 46:     static volatile JMenuItem mi1;
> 47:     static volatile JMenuItem mi2;

Both JMenuItems can be local.

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PR Review Comment: https://git.openjdk.org/jdk/pull/15831#discussion_r1330986431