RFR: 8378111: Migrate java/util/jar tests to JUnit [v4]

[Andrey Turbanov]

On Fri, 27 Feb 2026 19:52:03 GMT, Justin Lu <jlu at openjdk.org> wrote:

>> This PR migrates the java/util/jar tests to use _JUnit_.
>> 
>> https://github.com/openjdk/jdk/commit/afe0aeee746bccbbe4bc6c9a8cd2302228ecc2f6 includes changes for _testNG_ based tests.
>> https://github.com/openjdk/jdk/commit/c5a7f75840f96fa77ec3ed7faa713990adb84de6 includes changes for `main` based tests.
>> 
>> Before: Framework-based tests: 125 = 125 TestNG + 0 JUnit.
>> After: Framework-based tests: 174 = 0 TestNG + 174 JUnit
>
> Justin Lu has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains eight additional commits since the last revision:
> 
>  - Merge branch 'master' into junit-java-util-jar
>  - Reflect Lance's comments
>  - get rid of inheritance + zip -> ZIP
>  - Eirik comments
>  - Naoto comment
>  - Andrey comments
>  - main -> JUnit
>  - TestNG -> JUnit

test/jdk/java/util/jar/TestExtra.java line 62:

> 60: 
> 61:     // Use byte arrays instead of files
> 62:     ByteArrayOutputStream baos  = new ByteArrayOutputStream();

Suggestion:

    ByteArrayOutputStream baos = new ByteArrayOutputStream();

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PR Review Comment: https://git.openjdk.org/jdk/pull/29828#discussion_r2869801680