Error Prone 2.21.0

New Checkers:

• AttemptedNegativeZero: Prevents accidental use of -0, which is the same as 0. The floating-point negative zero is -0.0.
• ICCProfileGetInstance: Warns on uses of ICC_Profile.getInstance(String), due to JDK-8191622.
• MutableGuiceModule: Fields in Guice modules should be final.
• NullableOptional: Discourages @Nullable-annotated Optionals.
• OverridingMethodInconsistentArgumentNamesChecker: Arguments of overriding method are inconsistent with overridden method.

Fixed issues: #3976, #3986, #4001, #4002, #4026, #4027

Full Changelog: v2.20.0...v2.21.0

Error Prone 2.20.0

Changes:

• This release is compatible with early-access builds of JDK 21.

New Checkers:

• InlineTrivialConstant
• UnnecessaryStringBuilder
• BanClassLoader
• DereferenceWithNullBranch
• DoNotUseRuleChain
• LockOnNonEnclosingClassLiteral
• MissingRefasterAnnotation
• NamedLikeContextualKeyword
• NonApiType

Fixes issues: #2232, #2243, #2997, #3301, #3843, #3903, #3918, #3923, #3931, #3945, #3946

Full Changelog: v2.19.1...v2.20.0

Error Prone 2.19.1

This release fixes a binary compatibility issue when running on JDK 11, see #3895

Full Changelog: v2.19.0...v2.19.1

Error Prone 2.19.0

New Checkers:

• NotJavadoc
• StringCaseLocaleUsage
• UnnecessaryTestMethodPrefix

Fixes issues: #956, #3504, #3654, #3703, #3731, #3737, #3760, #3779, #3796, #3809, #3813

Full Changelog: v2.18.0...v2.19.0

Error Prone 2.18.0

New Checkers:

• InjectOnBugCheckers
• LabelledBreakTarget
• UnusedLabel
• YodaCondition

Fixes issues: #1650, #2706, #3404, #3493, #3504, #3519, #3579, #3610, #3632, #3638, #3645, #3646, #3652, #3690

Full Changelog: v2.17.0...v2.18.0

Error Prone 2.17.0

New Checkers:

• AvoidObjectArrays
• Finalize
• IgnoredPureGetter
• ImpossibleNullComparison
• MathAbsoluteNegative
• NewFileSystem
• StatementSwitchToExpressionSwitch
• UnqualifiedYield

Fixed issues: #2321, #3144, #3297, #3428, #3437, #3462, #3482, #3494

Full Changelog: v2.16...v2.17.0

Error Prone 2.16.0

New Checkers:

• ASTHelpersSuggestions
• CanIgnoreReturnValueSuggester
• LenientFormatStringValidation
• UnnecessarilyUsedValue

Fixed issues: #3092, #3220, #3225, #3267, #3441

Full Changelog: v2.15.0...v2.16

Error Prone 2.15.0

New Checkers:

• BuilderReturnThis
• CanIgnoreReturnValueSuggester
• CannotMockFinalClass
• CannotMockFinalMethod
• DirectInvocationOnMock
• ExtendsObject
• MockNotUsedInProduction
• NoCanIgnoreReturnValueOnClasses
• NullArgumentForNonNullParameter
• SelfAlwaysReturnsThis
• UnsafeWildcard
• UnusedTypeParameter

Fixed issues: #1562, #3236, #3245, #3321

Full Changelog: v2.14.0...v2.15.0

Error Prone 2.14.0

New checkers:

• BanJNDI
• EmptyTopLevelDeclaration
• ErroneousBitwiseExpression
• FuzzyEqualsShouldNotBeUsedInEqualsMethod
• Interruption
• NullableOnContainingClass

Fixed issues: #3110, #3193

Full Changelog: v2.13.1...v2.14.0

Error Prone 2.13.1

What's Changed

• Fix a crash in UnnecessaryBoxedVariable in #3118
• Include the unicode character in the diagnostic message in #3119

Full Changelog: v2.13.0...v2.13.1