<i18n dev> RFR: 8337279: Optimize format instant [v7]

[Shaojin Wen]

On Mon, 23 Sep 2024 05:33:53 GMT, Shaojin Wen <swen at openjdk.org> wrote:

> I don't think using SharedSecret just for performance improvement and code size reduction is the right way, as the class is the last resort as the header says:
> 
> ```
>  * <p><strong>
>  * Usage of these APIs often means bad encapsulation designs,
>  * increased complexity and lack of sustainability.
>  * Use this only as a last resort!
>  * </strong>
> ```

@naotoj 
 I have removed SharedSecrets, can you review it again?

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PR Comment: https://git.openjdk.org/jdk/pull/20353#issuecomment-2628624789