Fix findPubliclyAccessibleMethod to search interfaces for accessible methods#4287
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Fix findPubliclyAccessibleMethod to search interfaces for accessible methods#4287
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…methods (#4278) The findPubliclyAccessibleMethod algorithm only traversed superclasses when looking for a publicly accessible method. This caused InaccessibleObjectException on Java 16+ for non-public classes that implement public interfaces (e.g., TreeMap.Entry implementing Map.Entry), because the method was never found through the public interface and the fallback to setAccessible fails on JDK internal classes. Now the algorithm also checks interfaces implemented by each class in the hierarchy, finding methods declared on public interfaces like Map.Entry. https://claude.ai/code/session_0172bEhuTAQF3gcvxip6wz5K
bbakerman
reviewed
Mar 4, 2026
| } | ||
| } | ||
| // Also search super-interfaces of non-public interfaces | ||
| Method method = findMethodOnPublicInterfaces(cacheKey, iface.getInterfaces(), methodName, dfeInUse, allowStaticMethods); |
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You allowing interfaces implementing interfaces - fair enough - but there is not tests for that
I think you need to create the complicated structure that tests this
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Test ReportTest Results
Code Coverage (Java 25)
Changed Class Coverage (1 class)
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Test that findMethodOnPublicInterfaces correctly traverses package-private intermediate interfaces to find methods declared on public super-interfaces. Covers linear chain (pkg-private -> public grandparent) and diamond inheritance patterns. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
bbakerman
approved these changes
Mar 7, 2026
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Cover the dfeInUse path and NoSuchMethodException fallthrough in findMethodOnPublicInterfaces. Raises PropertyFetchingImpl line coverage from 86.1% to 88.2%, above the 87.8% baseline. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
PropertyDataFetcherfails to fetch properties on non-public classes (e.g.,TreeMap.Entry) that implement public interfaces (e.g.,Map.Entry) on Java 16+ wheresetAccessibleis restricted for JDK internal classesfindMethodOnPublicInterfacesmethod that recursively searches public interfaces implemented by a class when the class itself is not publicly accessiblePropertyDataFetchercan fetchkeyandvaluefromTreeMap.Entryvia the publicMap.EntryinterfaceTest plan
valueandkeyproperties fromTreeMap.EntryinstancesPropertyDataFetcherandSingletonPropertyDataFetcherhttps://claude.ai/code/session_01KSM9EgschAaxJVFeqM1enw