RFR: 8368729: Add appropriate checks in java.awt.image.Kernel constructor

[Sergey Bylokhov]

On Thu, 6 Nov 2025 08:45:28 GMT, Jayathirth D V <jdv at openjdk.org> wrote:

>Current spec already throws IAE in one of the validation scenario, so throwing the same IAE for other input argument validation is uniform.

We usually throw an NPE when the value is null, since you can’t validate any properties on a null reference, and it’s more specific than an IAE. Moreover, NPE was thrown before, so this won’t change the behavior.

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PR Review Comment: https://git.openjdk.org/jdk/pull/28127#discussion_r2500318684