RFR: 8289384: Fix warnings: method does not override the inherited method since it is private to a different package

[Andy Goryachev]

On Wed, 13 Jul 2022 10:57:37 GMT, Nir Lisker <nlisker at openjdk.org> wrote:

> I turned on errors on missing `@Override` annotations. I got over 1k errors. I think it's worth fixing it in batches.

missing @override is a different warning.  people do tend not to use this annotation, so any legacy code base usually contains lots of those.  same with synthetic accessors and unused imports.

I am ok with fixing all warnings, but people who use other IDEs or the IDEs with these warnings suppressed are bound to introduce them again and again.

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PR: https://git.openjdk.org/jfx/pull/824