Fix #5344: [java] Just log invalid annotation target type

[adangel]

Describe the PR

No error is logged anymore.

The debug logging looks like this:

[DEBUG] Invalid target type CLASS_EXTENDS of type annotation @org.checkerframework.checker.nullness.qual.Nullable for method or ctor detected. The annotation is ignored. Method: com.google.common.collect.MultimapBuilder#hashKeys. See https://github.com/pmd/pmd/issues/5344.
[DEBUG] Invalid target type CLASS_EXTENDS of type annotation @org.checkerframework.checker.nullness.qual.Nullable for method or ctor detected. The annotation is ignored. Method: com.google.common.collect.MultimapBuilder.MultimapBuilderWithKeys#hashSetValues. See https://github.com/pmd/pmd/issues/5344.

Related issues

• Fix [java] IllegalArgumentException: Invalid type reference for method or ctor type annotation: 16 #5344

Ready?

• Added unit tests for fixed bug/feature
• Passing all unit tests
• Complete build ./mvnw clean verify passes (checked automatically by github actions)
• Added (in-code) documentation (if needed)

[github-actions]

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No regression tested rules have been changed.

(comment created at 2025-07-22 17:38:49+00:00 for 0390b0d)

[oowekyala]

Looks good, thanks