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Error Prone v2.50.0 Release Notes

• 🆕 New checks:

  • BoxingComparator: Detect implicitly-boxing Comparator.comparing key extractors
  • ExposedPrivateType: Discourage references to private member classes from non-private APIs
  • ✅ JUnitMethodInvoked: Discourage directly invoking JUnit test methods
  • 🚚 ListRemoveAmbiguous: Detect ambiguous calls to List.remove(int|Integer)
  • ✅ PreferTestParameter: suggests using @TestParameter instead of @TestParameters for exhaustive boolean and enum parameters on single-element parameterized tests
  • RecordComponentAccessorAnnotationConflict: Detect conflicts between record components and explicit accessor methods
  • RecordComponentOverride: Discourage @OverRide on record component declarations that don't override
    anything
  • ThrowableEqualsHashCode: Discourage overriding Throwable.equals() and hashCode()

  Closed issues: #5553, #5649, #5778

  Full changelog: v2.49.0...v2.50.0

Previous changes from v2.49.0

• 🚀 This release includes several changes to Matcher APIs, and removed some deprecated or problematic APIs:

  • ✂ Remove deprecated MethodMatchers.withSignature API, which relies on fragile toString behaviour. Alternatives for matching on method signatures with varargs and type parameters were added in a98a1c5.
  • ✂ Removed variableType(Matcher) API. Matchers.variableType(Matcher) uses VariableTree#getType to match variable types, which own't work for lambda parameters with inferred types after JDK-8268850. The recommended replacement is variableType(TypePredicate).
  • 📦 Make enclosingPackage return an optional. Module elements are not enclosed by a package, checks using enclosingPackage shouldn't assume an enclosing package exists when processing arbitrary elements.
  • 🆕 New FieldMatchers API, similar to MethodMatchers (1dd9c3a).

  🆕 New checks:

  • AssertThrowsBlockToExpression: Discourage unnecessary block lambdas in assertThrows.
  • AssertThrowsMinimizer: Suggest minimizing the amount of logic in assertThrows.
  • MemorySegmentReferenceEquality: Discourage using reference equality for MemorySegments.
  • 👻 PreferThrowsTag: Recommends using @throws instead of the legacy @exception javadoc tag.
  • RecordAccessorInCompactConstructor: detect record accessors inside the compact canonical ctors, which read uninitialized fields.

  Closed issues: #2283, #3503, #5210, #5289, #5548, #5548, #5554, #5609, #5614, #5656

  Full changelog: v2.48.0...v2.49.0

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