RFR: 8348865: JButton/bug4796987.java never runs because Windows XP is unavailable

[Sergey Bylokhov]

On Tue, 28 Jan 2025 14:51:57 GMT, Alexey Ivanov <aivanov at openjdk.org> wrote:

> The `javax/swing/JButton/4796987/bug4796987.java` test strictly verifies if it's run on Windows XP, for this reason it never runs on modern versions of Windows.
> 
> Since Windows XP is obsolete and visual styles cannot be disabled since Windows 8, I removed the OS version check completely.
> 
> I captured an image of the panel and analyse colors in the image instead of using `Robot.getPixelColor`; I save the image for reference if the test fails.
> 
> The updated test passes in the CI.

test/jdk/javax/swing/JButton/4796987/bug4796987.java line 60:

> 58:     public static void main(String[] args) throws Exception {
> 59:         try {
> 60:             UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());

maybe we can check all installed L&Fs?

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PR Review Comment: https://git.openjdk.org/jdk/pull/23336#discussion_r1933012537