RFR: 8190264: JScrollBar ignores its border when using macOS Mac OS X Aqua look and feel [v4]

[Alisen Chung]

On Mon, 6 Dec 2021 22:21:26 GMT, Alexey Ivanov <aivanov at openjdk.org> wrote:

> How do you paint the frame into BufferedImage?
You may need to set the size of the frame explicitly.

I'm overriding the paintComponent method of JPanel to instead directly paint onto a BufferedImage that I passed in, similar to the TestBadBreak example.

I pushed what I have so far, but it seems like the BufferedImage is blank

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PR: https://git.openjdk.java.net/jdk/pull/6374