Integrated: 8311031: JTable header border vertical lines are not aligned with data grid lines

[Tejesh R]

On Tue, 4 Jul 2023 11:01:27 GMT, Tejesh R <tr at openjdk.org> wrote:

> The header border uses `g.drawLine` whereas the JTable data grid lines uses `SwingUtilities2.drawVLine` and `SwingUtilities2.drawHLine` to draw horizontal and vertical lines. The SwingUtilities2 uses `Graphics.fillRect` which contributes to the difference between the position of these two lines which happens/visible at higher ui scaling (difference in alignment between vertical lines of these two). The fix propose to use the same methods for metal L&F of JTable header border paint. 
> CI testing shows green.
> 
> ![image](https://github.com/openjdk/jdk/assets/94159358/f6d1d822-55ba-4ad3-9914-d3f68b67a6c5)

This pull request has now been integrated.

Changeset: 87d7e976
Author:    Tejesh R <tr at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/87d7e976cbb9a4441f6f215252383b41b2b69f97
Stats:     112 lines in 2 files changed: 108 ins; 0 del; 4 mod

8311031: JTable header border vertical lines are not aligned with data grid lines

Reviewed-by: abhiscxk, psadhukhan, aivanov

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PR: https://git.openjdk.org/jdk/pull/14766