RFR: JDK-8297413: Remove easy warnings in javafx.graphics [v4]

[Kevin Rushforth]

On Tue, 6 Dec 2022 06:39:32 GMT, Nir Lisker <nlisker at openjdk.org> wrote:

>> Since this is an internal class (not public API), I won't object to this change. I do think it's a rather pointless change, but I'll leave it up to you.
>
> Personally, I find that re-declaring type hierarchy is clutter. I can see why sometimes you might want to emphasize a functionality of a class that already exists, but the IDE makes it rather easy, I find.

In this particular case, it doesn't matter (especially since it's not public API), so I'm OK with the change. Where I _do_ think being more explicit is useful, is when a subclass `S` of a base class `B` wants to indicate that it has the property of being an instance of an interface `I` independent of whether or not its superclass `B` happens to implement `I`.

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PR: https://git.openjdk.org/jfx/pull/960