The use of [three-letter time zone IDs](https://download.java.net/java/early_access/jdk24/docs/api/java.base/java/util/TimeZone.html#three-letter-time-zone-ids-heading) has long been deprecated. For their actual removal in the future, making the runtime emit warnings for using those IDs would be desirable.
--------- ### Progress - [ ] Change must be properly reviewed (1 review required, with at least 1 [Reviewer](https://openjdk.org/bylaws#reviewer)) - [x] Change must not contain extraneous whitespace - [x] Commit message must refer to an issue ### Reviewers without OpenJDK IDs * @abdelhak-zaaim (no known openjdk.org user name / role) ### Reviewing <details><summary>Using <code>git</code></summary> Checkout this PR locally: \ `$ git fetch https://git.openjdk.org/jdk.git pull/23049/head:pull/23049` \ `$ git checkout pull/23049` Update a local copy of the PR: \ `$ git checkout pull/23049` \ `$ git pull https://git.openjdk.org/jdk.git pull/23049/head` </details> <details><summary>Using Skara CLI tools</summary> Checkout this PR locally: \ `$ git pr checkout 23049` View PR using the GUI difftool: \ `$ git pr show -t 23049` </details> <details><summary>Using diff file</summary> Download this PR as a diff file: \ <a href="https://git.openjdk.org/jdk/pull/23049.diff">https://git.openjdk.org/jdk/pull/23049.diff</a> </details> ------------- Commit messages: - initial commit Changes: https://git.openjdk.org/jdk/pull/23049/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=23049&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8342550 Stats: 61 lines in 3 files changed: 56 ins; 0 del; 5 mod Patch: https://git.openjdk.org/jdk/pull/23049.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/23049/head:pull/23049 PR: https://git.openjdk.org/jdk/pull/23049