RFR: 8349004: DatePicker: NPE in show() when initialized in a background thread

[Andy Goryachev]

On Wed, 12 Feb 2025 23:11:08 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

> 1. Change the spec and implementation to throw an exception if `ComboBoxBaseSkin::show` is called on a thread other than the FX Application Thread

I like this option!

Does it mean ColorPicker.show() should also throw?

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PR Comment: https://git.openjdk.org/jfx/pull/1708#issuecomment-2655082072