8353118: Deprecate the use of java.locale.useOldISOCodes system property

[naotoj]

Proposing to remove the java.locale.useOldISOCodes system property. This property is for backward compatibility introduced back in JDK17 and I believe it is now fine to remove it. In this PR targeting JDK25, it emits a deprecate-for-removal warning on startup if the system property is set to true (no behavioral change except the warning). The plan is eventually to remove it after JDK25. A corresponding CSR has been drafted.

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Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• Change requires CSR request JDK-8353120 to be approved

Issues

• JDK-8353118: Deprecate the use of java.locale.useOldISOCodes system property (Bug - P4)
• JDK-8353120: Deprecate the use of java.locale.useOldISOCodes system property (CSR)

Reviewers

• Iris Clark (@irisclark - Reviewer)
• Justin Lu (@justin-curtis-lu - Committer)

Reviewing

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Update a local copy of the PR:
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$ git pull https://git.openjdk.org/jdk.git pull/24302/head

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[bridgekeeper]

👋 Welcome back naoto! 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]

@naotoj This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8353118: Deprecate the use of `java.locale.useOldISOCodes` system property

Reviewed-by: iris, jlu

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been 116 new commits pushed to the master branch:

• fe8bd75: 8351290: Clarify integral only for vector operators
• 4d1de46: 8352185: Shenandoah: Invalid logic for remembered set verification
• 3e96f5c: 8351366: Remove the java.security.debug=scl option
• 4247744: 8351435: Change the default Console implementation back to the built-in one in java.base module
• 9c06dcb: 8349583: Add mechanism to disable signature schemes based on their TLS scope
• cd5a43a: 8353126: Open source events tests batch1
• e4e6278: 8346129: Simplify EdDSA & XDH curve name usage
• 7a2e198: 8352277: java.security documentation: incorrect regex syntax describing "usage" algorithm constraint
• b7ca76e: 8353235: Test jdk/jfr/api/metadata/annotations/TestPeriod.java fails with IllegalArgumentException
• bbd5b17: 8339280: jarsigner -verify performs cross-checking between CEN and LOC
• ... and 106 more: https://git.openjdk.org/jdk/compare/6e6a39d35fda929300c7668fdf5d2f0fbfed0606...master

As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

➡️ To integrate this PR with the above commit message to the master branch, type /integrate in a new comment.

[openjdk]

@naotoj The following labels will be automatically applied to this pull request:

• core-libs
• i18n

When this pull request is ready to be reviewed, an "RFR" email will be sent to the corresponding mailing lists. If you would like to change these labels, use the /label pull request command.

[mlbridge]

Webrevs

• 00: Full (4781e2e6)

[irisclark]

Looks good.

Associated CSR Reviewed.

[naotoj]

Thanks for the reviews!
/integrate

[openjdk]

Going to push as commit 564066d.
Since your change was applied there have been 134 commits pushed to the master branch:

• a1ab1d8: 8353449: [BACKOUT] One instance of STATIC_LIB_CFLAGS was missed in JDK-8345683
• 2a31f69: 8353331: Test ForkJoinPool20Test::testFixedDelaySequence is failing
• 1809138: 8352284: EXTRA_CFLAGS incorrectly applied to BUILD_LIBJVM src/hotspot C++ source files
• cef5610: 8353272: One instance of STATIC_LIB_CFLAGS was missed in JDK-8345683
• 6801eb8: 8352709: Remove bad timing annotations from WhileOpTest.java
• 85a0baf: 8352719: Add an equals sign to the modules statement
• f25f701: 8353226: JFR: emit old object samples must be transitive closure complete for segment
• aff5aa7: 8350566: NMT: add size parameter to MemTracker::record_virtual_memory_tag
• 196334f: 8352046: Test testEcoFriendly() in jdk tools launcher ExecutionEnvironment.java for AIX and Linux/musl is brittle
• ad48846: 8350386: Test TestCodeCacheFull.java fails with option -XX:-UseCodeCacheFlushing
• ... and 124 more: https://git.openjdk.org/jdk/compare/6e6a39d35fda929300c7668fdf5d2f0fbfed0606...master

Your commit was automatically rebased without conflicts.

[openjdk]

@naotoj Pushed as commit 564066d.

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