8333462: Performance regression of new DecimalFormat() when compare to jdk11

[cost0much]

Clean backport. Fixes performance regression of DecimalFormat. Passes GHA.

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Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8333462 needs maintainer approval

Issue

• JDK-8333462: Performance regression of new DecimalFormat() when compare to jdk11 (Bug - P4 - Rejected)

Reviewing

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Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk17u-dev.git pull/4189/head:pull/4189
$ git checkout pull/4189

Update a local copy of the PR:
$ git checkout pull/4189
$ git pull https://git.openjdk.org/jdk17u-dev.git pull/4189/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 4189

View PR using the GUI difftool:
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Download this PR as a diff file:
https://git.openjdk.org/jdk17u-dev/pull/4189.diff

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Link to Webrev Comment

[bridgekeeper]

👋 Welcome back cost0much! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

❗ This change is not yet ready to be integrated.
See the Progress checklist in the description for automated requirements.

[openjdk]

This backport pull request has now been updated with issue from the original commit.

[openjdk]

⚠️ @cost0much This change is now ready for you to apply for maintainer approval. This can be done directly in each associated issue or by using the /approval command.

[mlbridge]

Webrevs

• 00: Full (f785273b)

[cost0much]

/approval request Fixes a JDK17 performance regression of new DecimalFormat. Already backported to 21.0.5 and applies cleanly from JDK23. Passes GHA. Risk is low as lib change + previous 21 backport has gone multiple releases without issue.

[openjdk]

@cost0much
8333462: The approval request has been created successfully.