RFR: 8345431: Improve jar --validate to detect duplicate or invalid entries [v12]

[Henry Jen]

On Thu, 22 May 2025 11:42:04 GMT, Jaikiran Pai <jpai at openjdk.org> wrote:

>> Henry Jen has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Validator to take a file, use term JAR file
>
> test/jdk/tools/jar/ValidatorTest.java line 60:
> 
>> 58: import jdk.test.lib.util.FileUtils;
>> 59: 
>> 60: @TestInstance(Lifecycle.PER_CLASS)
> 
> I haven't seen this used commonly in our tests. Is there something specific in this test that requires this usage?

I take this in as other jar tests. I think it's because we used to share the ZIP file between tests. I believe I can remove it for this test.

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PR Review Comment: https://git.openjdk.org/jdk/pull/24430#discussion_r2103031299