RFR: 8271419: Refactor test code for modifying CDS archive contents [v2]

[Yumin Qi]

On Mon, 2 Aug 2021 18:45:51 GMT, Calvin Cheung <ccheung at openjdk.org> wrote:

>> Yumin Qi has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Move more function to CDSArchiveUtils, fixed review comments
>
> test/hotspot/jtreg/runtime/cds/appcds/SharedArchiveConsistency.java line 43:
> 
>> 41: import java.io.IOException;
>> 42: import java.util.Random;
>> 43: import sun.hotspot.WhiteBox;
> 
> The import of Random is no longer needed.
> I think the import of WhiteBox can also be removed since it is not used in this file.

Yes, they no longer needed. thanks.

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PR: https://git.openjdk.java.net/jdk/pull/4945