8338139: {ClassLoading,Memory}MXBean::isVerbose methods are inconsistent with their setVerbose methods

[GoeLin]

A backport to jdk21u as this fixes a jck issue.

I had to remove the namespace from LogConfiguration::StdoutLog as JDK-8299825 is not in 21.
I also had to adapt TestVerboseClassLoading, as 'cause' is not known to the logging in 21.

Tests fail as expected, and passes with the fix.

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Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8338139 needs maintainer approval
• Change requires CSR request JDK-8338540 to be approved

Issues

• JDK-8338139: {ClassLoading,Memory}MXBean::isVerbose methods are inconsistent with their setVerbose methods (Bug - P1 - Approved)
• JDK-8338540: {ClassLoading,Memory}MXBean::isVerbose methods are inconsistent with their setVerbose methods (CSR)

Reviewers

• Martin Doerr (@TheRealMDoerr - Reviewer)

Reviewing

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Checkout this PR locally:
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$ git checkout pull/449

Update a local copy of the PR:
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$ git pull https://git.openjdk.org/jdk21u.git pull/449/head

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Checkout this PR locally:
$ git pr checkout 449

View PR using the GUI difftool:
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[bridgekeeper]

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[openjdk]

@GoeLin This change now passes all automated pre-integration checks.

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After integration, the commit message for the final commit will be:

8338139: {ClassLoading,Memory}MXBean::isVerbose methods are inconsistent with their setVerbose methods

Reviewed-by: mdoerr

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[mlbridge]

Webrevs

• 00: Full (b106b0e1)

[GoeLin]

GHA failure: TEST: serviceability/sa/ClhsdbFindPC.java#no-xcomp-process
Failed. Execution failed: `main' threw exception: java.lang.RuntimeException: Test ERROR java.lang.RuntimeException: '^sun.jvm.hotspot.debugger.DebuggerException:.*$' found in stderr: 'sun.jvm.hotspot.debugger.DebuggerException: Doesn't appear to be a HotSpot VM (could not find symbol "gHotSpotVMTypes" in remote process)'

Linkage problem, surely unrelated to my change that does not touch this symbol. Was there some old binary somewhere?
Will trigger retest.

[openjdk]

This backport pull request has now been updated with issue from the original commit.

[TheRealMDoerr]

LGTM. Thanks for backporting and your explanations!

[openjdk]

⚠️ @GoeLin This change is now ready for you to apply for maintainer approval. This can be done directly in each associated issue or by using the /approval command.

[GoeLin]

/integrate

[openjdk]

Going to push as commit 459757e.

[openjdk]

@GoeLin Pushed as commit 459757e.

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