RFR: 8334580: Deprecate no-arg constructor BasicSliderUI() for removal [v2]

[Alexey Ivanov]

On Fri, 21 Jun 2024 12:11:21 GMT, Prasanta Sadhukhan <psadhukhan at openjdk.org> wrote:

>> The no-arg constructor BasicSliderUI() was added under [JDK-8250852](https://bugs.openjdk.org/browse/JDK-8250852) by mistake. This constructor should be deprecated for removal in future release
>
> Prasanta Sadhukhan has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Add forRemoval

> > I was under impression that BasicSliderUI(JSlider b) did use its parameter but it doesn't.
> >
> > Should we keep the new constructor and deprecate the _old_ one?
> 
> I guess if we remove the old one, it might mean incompatibility to applications which might be using it/calling it.. Even `createUI `uses this JSlider param constructor

This is why we *cannot* remove the old constructor with the parameter but we can deprecate it. The `createUI` method can use new no-arg constructor, and nothing will change.

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PR Comment: https://git.openjdk.org/jdk/pull/19819#issuecomment-2183068827