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

[Andy Goryachev]

On Fri, 8 Jul 2022 21:37:47 GMT, Andy Goryachev <duke at openjdk.org> wrote:

> The fix includes:
> - renaming of offending methods to avoid confusion
> - explicitly declaring the offending methods as private

I agree - we might want to leave synthetic methods as is and suppress the warning in Eclipse preferences, as the changes may not be trivial.

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