RFR: 8378111: Migrate java/util/jar tests to JUnit [v3]

[Justin Lu]

On Fri, 27 Feb 2026 18:47:00 GMT, Lance Andersen <lancea at openjdk.org> wrote:

>> Justin Lu has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   get rid of inheritance + zip -> ZIP
>
> test/jdk/java/util/jar/TestJarExtra.java line 77:
> 
>> 75:     @Test
>> 76:     void jarExtraHeaderOnlyTest() throws IOException {
>> 77:         testHeaderOnly();
> 
> Any reason not to  collapse testHeaderOnly into this test method vs calling it as I did not see it called twice unless I missed it

Thanks for reviewing Lance. The extra test methods were remnants from the testing structure in previous commits, the indirection can be removed.

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PR Review Comment: https://git.openjdk.org/jdk/pull/29828#discussion_r2865929115