RFR: 8290313: Produce warning when user specified java.io.tmpdir directory doesn't exist [v2]

[Sean Coffey]

On Wed, 16 Nov 2022 15:12:41 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

>> Weibing Xiao has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   the change according to review comment
>
> test/jdk/java/io/File/TempDirectoryNotExisting.java line 45:
> 
>> 43: 
>> 44:         String userDir = System.getProperty("user.home");
>> 45:         String timeStamp = System.currentTimeMillis() + "";
> 
> A human readable string might be useful.  For example,  "2022-11-16T15:10:50.622334Z"
> `java.time.Instant.now().toString()`

root cause for JDK-8297528

Please revert the change Weibing and be sure to remove the test from ProblemList when doing so (next week)

Please also ensure that you run tests against mach5 before integrating any change in future,

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PR: https://git.openjdk.org/jdk/pull/11174