RFR: 8315968: Consolidate java.util.Digits and StringLatin1::PACKED_DIGITS [v2]

[温绍锦]

On Sun, 10 Sep 2023 18:37:20 GMT, 温绍锦 <duke at openjdk.org> wrote:

>> src/java.base/share/classes/java/util/Digits.java line 36:
>> 
>>> 34:  * @since 21
>>> 35:  */
>>> 36: sealed interface Digits permits HexDigits, OctalDigits {
>> 
>> Don't break up the trio, move all three classes and the interface to jdk.internal.util.
>> I don't see the value in the INSTANCE values but keep it intact.
>
> HexDigits I will change after the PR #14745 is merged,  Can you add comment /sponsor for me?

I want to remove the Digits interface and use static methods

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PR Review Comment: https://git.openjdk.org/jdk/pull/15651#discussion_r1320843342