RFR: 8353685: Open some JComboBox bugs 4

[Sergey Bylokhov]

On Thu, 17 Apr 2025 17:56:45 GMT, Alisen Chung <achung at openjdk.org> wrote:

> Updating and opening some JComboBox bugs

test/jdk/javax/swing/JComboBox/bug4459267.java line 47:

> 45:             Robot robot = new Robot();
> 46:             robot.waitForIdle();
> 47:             robot.delay(250);

why it is necessary to wait at the start of the test?

test/jdk/javax/swing/JComboBox/bug4459267.java line 58:

> 56:             robot.delay(250);
> 57:         } finally {
> 58:             if (frame != null) {

the frame is initialized in another thread.

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PR Review Comment: https://git.openjdk.org/jdk/pull/24733#discussion_r2049920490
PR Review Comment: https://git.openjdk.org/jdk/pull/24733#discussion_r2049920753