Uses of Class
com.google.errorprone.BugPattern

Packages that use BugPattern

Package	Description
com.google.errorprone
com.google.errorprone.bugpatterns	Checks added to the java compiler which detect common bug patterns.
com.google.errorprone.bugpatterns.android
com.google.errorprone.bugpatterns.apidiff
com.google.errorprone.bugpatterns.argumentselectiondefects
com.google.errorprone.bugpatterns.checkreturnvalue
com.google.errorprone.bugpatterns.collectionincompatibletype
com.google.errorprone.bugpatterns.flogger
com.google.errorprone.bugpatterns.formatstring
com.google.errorprone.bugpatterns.inject	Bug patterns related to dependency injection and JSR 330.
com.google.errorprone.bugpatterns.inject.dagger	Bug patterns related to Dagger.
com.google.errorprone.bugpatterns.inject.guice	Bug patterns related to Guice.
com.google.errorprone.bugpatterns.inlineme
com.google.errorprone.bugpatterns.javadoc
com.google.errorprone.bugpatterns.nullness
com.google.errorprone.bugpatterns.overloading
com.google.errorprone.bugpatterns.threadsafety
com.google.errorprone.bugpatterns.time

Uses of BugPattern in com.google.errorprone

Methods in com.google.errorprone with parameters of type BugPattern

Modifier and Type	Method	Description
static String	BugCheckerInfo.canonicalName(String className, BugPattern pattern)
static void	BugPatternValidator.validate(BugPattern pattern)

Uses of BugPattern in com.google.errorprone.bugpatterns

Classes in com.google.errorprone.bugpatterns with annotations of type BugPattern

Modifier and Type	Class	Description
class	AlreadyChecked	Bugpattern to find conditions which are checked more than once.
class	AlwaysThrows	A BugChecker; see the associated BugPattern annotation for details.
class	AmbiguousMethodReference	A BugChecker; see the associated BugPattern annotation for details.
class	AnnotateFormatMethod	Detects occurrences of pairs of parameters being passed straight through to String.format(java.lang.String, java.lang.Object...) from a method not annotated with FormatMethod.
class	AnnotationMirrorToString	A BugChecker; see the associated BugPattern annotation for details.
class	AnnotationPosition	Checks annotation positioning, and orphaned Javadocs.
class	AnnotationValueToString	A BugChecker; see the associated BugPattern annotation for details.
class	ArrayAsKeyOfSetOrMap	Warns that users should not have an array as a key to a Set or Map
class	ArrayEquals
class	ArrayFillIncompatibleType	Checks when Arrays.fill(Object[], Object) is called with object types that are guaranteed to result in an ArrayStoreException.
class	ArrayHashCode
class	ArraysAsListPrimitiveArray
class	ArrayToString
class	AssertFalse
class	AssertionFailureIgnored	A BugChecker; see the associated BugPattern annotation for details.
class	AssertThrowsMultipleStatements	A BugChecker; see the associated BugPattern annotation for details.
class	AsyncCallableReturnsNull	Checks that AsyncCallable implementations do not directly return null.
class	AsyncFunctionReturnsNull	Checks that AsyncFunction implementations do not directly return null.
class	AutoValueBuilderDefaultsInConstructor	See summary for details.
class	AutoValueFinalMethods	Checks the toString(), hashCode() and equals() methods are final in AutoValue classes.
class	AutoValueImmutableFields	Flags mutable collections in AutoValue.
class	AutoValueSubclassLeaked	Matches AutoValue_ uses outside the containing file.
class	BadAnnotationImplementation	Checker that ensures implementations of Annotation override equals and hashCode.
class	BadComparable
class	BadImport
class	BadInstanceof	Matches instanceof checks where the expression is a subtype of the checked type.
class	BadShiftAmount
class	BanSerializableRead	A BugChecker that detects use of the unsafe Serializable API.
class	BareDotMetacharacter	A BugChecker; see the associated BugPattern for details.
class	BigDecimalEquals	Matches use of BigDecimal#equals, which compares scale as well (which is not likely to be intended).
class	BigDecimalLiteralDouble	Matches usages of new BigDecimal(double) which lose precision.
class	BooleanParameter	A BugChecker; see the associated BugPattern annotation for details.
class	BoxedPrimitiveConstructor	A BugChecker; see the associated BugPattern annotation for details.
class	BoxedPrimitiveEquality	A BugChecker; see the associated BugPattern annotation for details.
class	BugPatternNaming	See the summary.
class	ByteBufferBackingArray	Checks when ByteBuffer.array() is used without calling .arrayOffset() to know the offset of the array, or when the buffer wasn't initialized using ByteBuffer.wrap() or ByteBuffer.allocate().
class	CacheLoaderNull	A BugChecker; see the associated BugPattern annotation for details.
class	CannotMockFinalClass	Bug pattern to recognize attempts to mock final types.
class	CanonicalDuration	A BugChecker; see the associated BugPattern annotation for details.
class	CatchAndPrintStackTrace	A BugChecker; see the associated BugPattern annotation for details.
class	CatchFail	A BugChecker; see the associated BugPattern annotation for details.
class	CatchingUnchecked	Flags code which catches RuntimeExceptions under the guise of catching Exception.
class	ChainedAssertionLosesContext	Identifies calls to assertThat and similar methods inside the implementation of a Subject assertion method.
class	ChainingConstructorIgnoresParameter	Checks, if two constructors in a class both accept Foo foo and one calls the other, that the caller passes foo as a parameter.
class	CharacterGetNumericValue	Checks for use of Character.getNumericValue and UCharacter.getNumericValue
class	CheckedExceptionNotThrown	Flags checked exceptions which are claimed to be thrown, but are not.
class	CheckNotNullMultipleTimes	Checks for the same variable being checked against null twice in a method.
class	CheckReturnValue
class	ClassCanBeStatic
class	ClassName	A BugChecker; see the associated BugPattern annotation for details.
class	ClassNamedLikeTypeParameter
class	ClassNewInstance	A BugChecker; see the associated BugPattern annotation for details.
class	CollectionToArraySafeParameter
class	CollectorShouldNotUseState
class	ComparableAndComparator
class	ComparableType
class	CompareToZero	Suggests comparing the result of compareTo to only 0.
class	ComparingThisWithNull	Check for expressions containing this != null or this == null
class	ComparisonContractViolated
class	ComparisonOutOfRange
class	CompileTimeConstantChecker	Detects invocations of methods with a parameter annotated @CompileTimeConstant such that the corresponding actual parameter is not a compile-time constant expression, and initialisation of fields declared @CompileTimeConstant final such that the actual value is not a compile-time constant expression.
class	ComplexBooleanConstant
class	ComputeIfAbsentAmbiguousReference	Flags ambiguous creations of objects in Map.computeIfAbsent(K, java.util.function.Function<? super K, ? extends V>).
class	ConditionalExpressionNumericPromotion
class	ConstantField	A BugChecker; see the associated BugPattern annotation for details.
class	ConstantOverflow	A BugChecker; see the associated BugPattern annotation for details.
class	ConstantPatternCompile	Flags variables initialized with Pattern.compile(String) calls that could be constants.
class	DangerousLiteralNullChecker	A BugChecker; see the associated BugPattern annotation for details.
class	DateFormatConstant	A BugChecker; see the associated BugPattern annotation for details.
class	DeadException
class	DeadThread	A BugChecker; see the associated BugPattern annotation for details.
class	DeduplicateConstants	A checker that suggests deduplicating literals with existing constant variables.
class	DefaultCharset	A BugChecker; see the associated BugPattern annotation for details.
class	DefaultPackage	Java classes shouldn't use default package.
class	DepAnn	Matches the behaviour of the javac dep-ann Xlint warning.
class	DeprecatedVariable	A BugChecker; see the associated BugPattern annotation for details.
class	DifferentNameButSame	Discourages using multiple names to refer to the same type within a file (e.g.
class	DiscardedPostfixExpression	A BugChecker; see the associated BugPattern annotation for details.
class	DistinctVarargsChecker	ErrorProne checker to generate warning when method expecting distinct varargs is invoked with same variable argument.
class	DivZero	Matches the behaviour of javac's divzero xlint warning.
class	DoNotCallChecker	A BugChecker; see the associated BugPattern annotation for details.
class	DoNotCallSuggester	If a method always throws an exception, consider annotating it with @DoNotCall to prevent calls at compile-time instead failing at runtime.
class	DoNotClaimAnnotations	A BugChecker; see the associated BugPattern annotation for details.
class	DoNotMockAutoValue	Suggests not mocking AutoValue classes.
class	DoNotMockChecker	Points out if a Mockito or EasyMock mock is mocking an object that would be better off being tested using an alternative instance.
class	DoubleBraceInitialization	A BugChecker; see the associated BugPattern annotation for details.
class	DuplicateMapKeys	Flags duplicate keys used in ImmutableMap construction.
class	EmptyCatch	A BugChecker; see the associated BugPattern annotation for details.
class	EmptyIfStatement	This checker finds and fixes empty statements after an if, with no else part.
class	EmptyTopLevelDeclaration	A BugChecker; see the associated BugPattern annotation for details.
class	EqualsGetClass	Discourages the use of Object.getClass() when implementing Object.equals(Object) for non-final classes.
class	EqualsHashCode	Classes that override Object.equals(java.lang.Object) should also override Object.hashCode().
class	EqualsIncompatibleType
class	EqualsNaN
class	EqualsNull	A BugChecker; see the associated BugPattern annotation for details.
class	EqualsReference
class	EqualsUnsafeCast	Checks for equals implementations making unsafe casts.
class	EqualsUsingHashCode	Discourages implementing equals using hashCode.
class	EqualsWrongThing	Checks for equals implementations comparing non-corresponding fields.
class	ErroneousThreadPoolConstructorChecker	ErrorProne checker to generate warning whenever ThreadPoolExecutor is constructed with different corePoolSize and maximumPoolSize using an unbounded workQueue
class	ExpectedExceptionChecker	A BugChecker; see the associated BugPattern annotation for details.
class	ExtendingJUnitAssert
class	ExtendsAutoValue	Makes sure that you are not extending a class that has @AutoValue as an annotation.
class	FallThrough	A BugChecker; see the associated BugPattern annotation for details.
class	FieldCanBeFinal
class	FieldCanBeLocal	Flags fields which can be replaced with local variables.
class	FieldCanBeStatic	Finds fields which can be safely made static.
class	Finally	Matches the behaviour of javac's finally Xlint warning.
class	FloatCast	A BugChecker; see the associated BugPattern annotation for details.
class	FloatingPointAssertionWithinEpsilon	Detects usages of Float,DoubleSubject.isWithin(TOLERANCE).of(EXPECTED) where there are no other floating point values other than EXPECTED with satisfy the assertion, but TOLERANCE is not zero.
class	FloatingPointLiteralPrecision	A BugChecker; see the associated BugPattern annotation for details.
class	ForEachIterable	A BugChecker; see the associated BugPattern annotation for details.
class	ForOverrideChecker	Verifies that methods marked ForOverride are only called from the defining class.
class	FunctionalInterfaceClash	A BugChecker; see the associated BugPattern annotation for details.
class	FunctionalInterfaceMethodChanged
class	FutureReturnValueIgnored	See BugPattern annotation.
class	FuturesGetCheckedIllegalExceptionType	Checks for calls to Guava's Futures.getChecked method that will always fail because they pass an incompatible exception type.
class	FuzzyEqualsShouldNotBeUsedInEqualsMethod
class	GetClassOnAnnotation	A BugChecker; see the associated BugPattern annotation for details.
class	GetClassOnClass
class	GetClassOnEnum	A BugChecker; see the associated BugPattern annotation for details.
class	HashCodeToString	Classes that override Object.hashCode() should consider overriding Object.toString().
class	HashtableContains	A BugChecker; see the associated BugPattern annotation for details.
class	HidingField
class	IdentityBinaryExpression	A BugChecker; see the associated BugPattern annotation for details.
class	IdentityHashMapBoxing	A BugChecker; see the associated BugPattern annotation for details.
class	IdentityHashMapUsage	A BugChecker; see the associated BugPattern annotation for details.
class	IgnoredPureGetter	Flags ignored return values from pure getters.
class	ImmutableMemberCollection	Refactoring to suggest Immutable types for member collection that are not mutated.
class	ImmutableSetForContains	Refactoring to suggest using private static final ImmutableSet over ImmutableList when using only contains, containsAll and isEmpty.
class	ImplementAssertionWithChaining	Migrates Truth subjects from a manual "test and fail" approach to one using Subject.check(...).
class	Incomparable	A BugChecker; see the associated BugPattern annotation for details.
class	IncompatibleModifiersChecker
class	InconsistentCapitalization	Checker for variables under the same scope that only differ in capitalization.
class	InconsistentHashCode	Looks for hashCode implementations which are inconsistent with equals.
class	IncrementInForLoopAndHeader
class	IndexOfChar	A BugChecker; see the associated BugPattern annotation for details.
class	InexactVarargsConditional	A BugChecker; see the associated BugPattern annotation for details.
class	InfiniteRecursion	A BugChecker; see the associated BugPattern annotation for details.
class	InitializeInline	Bugpattern to encourage initializing effectively final variables inline with their declaration, if possible.
class	InputStreamSlowMultibyteRead	Checks that InputStreams should override int read(byte[], int, int);
class	InsecureCipherMode
class	InstanceOfAndCastMatchWrongType
class	InterfaceWithOnlyStatics	Bugpattern to detect interfaces used only to store static fields/methods.
class	InterruptedExceptionSwallowed	Checks for cases where an InterruptedException is caught as part of a catch block catching a supertype, and not specially handled.
class	IntLongMath	A BugChecker; see the associated BugPattern annotation for details.
class	InvalidPatternSyntax
class	InvalidTimeZoneID
class	InvalidZoneId	Validates ZoneId.
class	IsInstanceIncompatibleType
class	IsInstanceOfClass	A BugChecker; see the associated BugPattern annotation for details.
class	IterableAndIterator
class	IterablePathParameter	A BugChecker; see the associated BugPattern annotation for details.
class	JavaLangClash	A BugChecker; see the associated BugPattern annotation for details.
class	JavaUtilDateChecker	A BugChecker; see the associated BugPattern annotation for details.
class	JdkObsolete	A BugChecker; see the associated BugPattern annotation for details.
class	JMockTestWithoutRunWithOrRuleAnnotation
class	JUnit3FloatingPointComparisonWithoutDelta	Detects floating-point assertEquals() calls that will not work in JUnit 4.
class	JUnit3TestNotRun
class	JUnit4ClassAnnotationNonStatic	@BeforeClass or @AfterClass should be applied to static methods.
class	JUnit4ClassUsedInJUnit3
class	JUnit4SetUpNotRun	Checks for the existence of a JUnit3 style setUp() method in a JUnit4 test class or methods annotated with a non-JUnit4 @Before annotation.
class	JUnit4TearDownNotRun	Checks for the existence of a JUnit3 style tearDown() method in a JUnit4 test class or methods annotated with a non-JUnit4 @After annotation.
class	JUnit4TestNotRun
class	JUnit4TestsNotRunWithinEnclosed	Finds tests that won't run due to the enclosing runner.
class	JUnitAmbiguousTestClass
class	JUnitAssertSameCheck	Points out if an object is tested for reference equality to itself using JUnit library.
class	JUnitParameterMethodNotFound	Checks if the methods specified in junitparams.Parameters annotation to provide parameters exists.
class	LambdaFunctionalInterface
class	LiteByteStringUtf8
class	LiteEnumValueOf	Points out if #valueOf() is called on a Protocol Buffer Enum.
class	LiteProtoToString	Flags calls to toString on lite protos.
class	LockNotBeforeTry	Suggests that calls to Lock.lock must be immediately followed by a try-finally that calls Lock.unlock.
class	LockOnBoxedPrimitive	Detects locks on boxed primitives.
class	LogicalAssignment	A BugChecker; see the associated BugPattern annotation for details.
class	LongFloatConversion	A BugChecker; see the associated BugPattern annotation for details.
class	LongLiteralLowerCaseSuffix	Matcher for a long literal with a lower-case ell for a suffix (e.g.
class	LoopConditionChecker	A BugChecker; see the associated BugPattern annotation for details.
class	LoopOverCharArray	A BugChecker; see the associated BugPattern annotation for details.
class	LossyPrimitiveCompare	Checker to prevent usages of comparison methods where both the operands undergo lossy widening.
class	MathAbsoluteRandom
class	MathRoundIntLong	Check for calls to Math's Math.round(float) with an integer or long parameter.
class	MemberName	Flags a few ways in which member names may violate the style guide.
class	MemoizeConstantVisitorStateLookups	A BugChecker; see the associated BugPattern annotation for details.
class	MethodCanBeStatic	A BugChecker; see the associated BugPattern annotation for details.
class	MissingBraces	A BugChecker; see the associated BugPattern annotation for details.
class	MissingCasesInEnumSwitch	A BugChecker; see the associated BugPattern annotation for details.
class	MissingDefault	A BugChecker; see the associated BugPattern annotation for details.
class	MissingFail
class	MissingImplementsComparable	A BugChecker; see the associated BugPattern annotation for details.
class	MissingOverride	A BugChecker; see the associated BugPattern annotation for details.
class	MissingSuperCall
class	MissingTestCall	Matches test helpers which require a terminating method to be called.
class	MisusedDayOfYear	Ban use of D (day-of-year) in a date format pattern that also contains M (month-of-year).
class	MisusedWeekYear	Ban use of YYYY in a SimpleDateFormat pattern, unless it is being used for a week date.
class	MixedArrayDimensions	A BugChecker; see the associated BugPattern annotation for details.
class	MixedDescriptors	Checks for calls to Descriptor#findFieldByNumber with field numbers from a different proto.
class	MixedMutabilityReturnType	Flags methods which return mutable collections from some code paths, but immutable ones from others.
class	MockitoUsage	A BugChecker; see the associated BugPattern annotation for details.
class	ModifiedButNotUsed	Matches creation of new collections/proto builders which are modified but never used.
class	ModifyCollectionInEnhancedForLoop
class	ModifyingCollectionWithItself
class	ModifySourceCollectionInStream	Identify the backing collection source of a stream and reports if the source is mutated during the stream operations.
class	MultipleParallelOrSequentialCalls
class	MultipleTopLevelClasses	A BugChecker; see the associated BugPattern annotation for details.
class	MultipleUnaryOperatorsInMethodCall
class	MultiVariableDeclaration	A BugChecker; see the associated BugPattern annotation for details.
class	MustBeClosedChecker	Checks if a constructor or method annotated with MustBeClosed is called within the resource variable initializer of a try-with-resources statement.
class	MutablePublicArray	Check for public static final declaration of Arrays.
class	NarrowingCompoundAssignment	A BugChecker; see the associated BugPattern annotation for details.
class	NCopiesOfChar	A BugChecker; see the associated BugPattern annotation for details.
class	NegativeCharLiteral	A BugChecker; see the associated BugPattern annotation for details.
class	NestedInstanceOfConditions
class	NoAllocationChecker	Checks methods annotated with @NoAllocation to ensure they really do not allocate.
class	NoFunctionalReturnType	Check for functional return types.
class	NonAtomicVolatileUpdate	Detects non-atomic updates to volatile variables.
class	NonCanonicalStaticImport	Types shouldn't be statically by their non-canonical name.
class	NonCanonicalStaticMemberImport	Members shouldn't be statically by their non-canonical name.
class	NonCanonicalType	Flags types being referred to by their non-canonical name.
class	NonFinalCompileTimeConstant	Enforce that @CompileTimeConstant parameters are final or effectively final.
class	NonOverridingEquals	Bug checker for equals methods that don't actually override equals.
class	NonRuntimeAnnotation
class	NullableConstructor	A BugChecker; see the associated BugPattern annotation for details.
class	NullablePrimitive
class	NullablePrimitiveArray	A BugChecker; see the associated BugPattern annotation for details.
class	NullableVoid	A BugChecker; see the associated BugPattern annotation for details.
class	NullOptional	Flags passing literal null to Optional-accepting APIs.
class	NullTernary	A BugChecker; see the associated BugPattern annotation for details.
class	NumericEquality
class	ObjectEqualsForPrimitives	Check for usage of Objects.equal on primitive types.
class	ObjectsHashCodePrimitive	Check for calls to Objects' Objects.hashCode(java.lang.Object) with a primitive parameter.
class	ObjectToString	Warns against calling toString() on Objects which don't have toString() method overridden and won't produce meaningful output.
class	OperatorPrecedence	A BugChecker; see the associated BugPattern annotation for details.
class	OptionalEquality	A BugChecker; see the associated BugPattern annotation for details.
class	OptionalMapToOptional	Matches Optional#map mapping to another Optional.
class	OptionalMapUnusedValue	Replaces Optional.map with Optional.ifPresent if the value is unused.
class	OptionalNotPresent
class	OptionalOfRedundantMethod	Checks if Optional#of is chained with a redundant method.
class	OrphanedFormatString	A BugChecker; see the associated BugPattern annotation for details.
class	OutlineNone	Check for the a11y antipattern of setting CSS outline attributes to none or 0.
class	Overrides	Matches the behaviour of javac's overrides Xlint warning.
class	OverrideThrowableToString	Warns against overriding toString() in a Throwable class and suggests getMessage()
class	PackageInfo	A BugChecker; see the associated BugPattern annotation for details.
class	PackageLocation	A BugChecker; see the associated BugPattern annotation for details.
class	ParameterComment	A BugChecker; see the associated BugPattern annotation for details.
class	ParameterName	A BugChecker; see the associated BugPattern annotation for details.
class	ParametersButNotParameterized	Flags uses of parameters in non-parameterized tests.
class	PreconditionsCheckNotNullRepeated	Checks that Precondition.checkNotNull is not invoked with same arg twice.
class	PreconditionsInvalidPlaceholder
class	PreferredInterfaceType	Tightens types which refer to an Iterable, Map, Multimap, etc.
class	PrimitiveArrayPassedToVarargsMethod
class	PrimitiveAtomicReference	Discourages inadvertently using reference equality on boxed primitives in AtomicReference.
class	PrivateConstructorForUtilityClass
class	PrivateSecurityContractProtoAccess	Check for disallowed access to private_do_not_access_or_else proto fields.
class	ProtectedMembersInFinalClass	Flags protected members in final classes.
class	ProtoBuilderReturnValueIgnored	Highlights cases where a proto's build method has its return value ignored.
class	ProtocolBufferOrdinal	Points out if #ordinal() is called on a Protocol Buffer Enum.
class	ProtoFieldNullComparison	Matches comparison of proto fields to null.
class	ProtoRedundantSet	Checks that protocol buffers built with chained builders don't set the same field twice.
class	ProtosAsKeyOfSetOrMap	Check for usage of Set<Proto> or Map<Proto, E>.
class	ProtoStringFieldReferenceEquality
class	ProtoTruthMixedDescriptors	Checks that ProtoTruth's ignoringFields is passed field numbers from the correct proto.
class	PublicApiNamedStreamShouldReturnStream	Checks if public APIs named "stream" returns a type whose name ends with Stream.
class	PublicConstructorForAbstractClass	A BugChecker; see the associated BugPattern annotation for details.
class	RandomCast	A BugChecker; see the associated BugPattern annotation for details.
class	RandomModInteger
class	ReachabilityFenceUsage	A BugChecker; see the associated BugPattern annotation for details.
class	RedundantOverride	Removes overrides which purely pass through to the method in the super class.
class	RedundantThrows	A BugChecker; see the associated BugPattern annotation for details.
class	ReferenceEquality	A BugChecker; see the associated BugPattern annotation for details.
class	RemoveUnusedImports
class	RequiredModifiersChecker
class	RestrictedApiChecker	Check for non-allowlisted callers to RestrictedApiChecker.
class	RethrowReflectiveOperationExceptionAsLinkageError	A BugChecker; see the associated BugPattern annotation for details.
class	ReturnsNullCollection	Flags methods with collection return types which return null in some cases but don't annotate the method as @Nullable.
class	ReturnValueIgnored
class	RxReturnValueIgnored	A BugChecker; see the associated BugPattern for details.
class	SameNameButDifferent	Looks for types being shadowed by other types in a way that may be confusing.
class	SelfAssignment	TODO(eaftan): Consider cases where the parent is not a statement or there is no parent?
class	SelfComparison	Points out if an object is compared to itself.
class	SelfEquals
class	ShortCircuitBoolean
class	ShouldHaveEvenArgs	Checks that variable argument methods have even number of arguments.
class	SizeGreaterThanOrEqualsZero	Finds instances where one uses Collection#size() >= 0 or T[].length > 0.
class	StaticAssignmentInConstructor	Checks for static fields being assigned within constructors.
class	StaticMockMember	A BugChecker; see the associated BugPattern annotation for details.
class	StaticQualifiedUsingExpression
class	StreamResourceLeak	A BugChecker; see the associated BugPattern annotation for details.
class	StreamToIterable	Discourage stream::iterator to create Iterables.
class	StreamToString	A BugChecker; see the associated BugPattern annotation for details.
class	StringBuilderInitWithChar
class	StringEquality
class	StringSplitter	A BugChecker; see the associated BugPattern annotation for details.
class	StronglyTypeByteString	Flags fields which would be better expressed as ByteStrings rather than primitive byte arrays.
class	SubstringOfZero	Check for calls to String's foo.substring(0).
class	SuppressWarningsDeprecated	Find uses of SuppressWarnings with "deprecated".
class	SuppressWarningsWithoutExplanation	Finds occurrences of @SuppressWarnings where there is definitely no explanation for why it is safe.
class	SwigMemoryLeak
class	SwitchDefault	A BugChecker; see the associated BugPattern annotation for details.
class	SymbolToString	Flags com.sun.tools.javac.code.Symbol#toString usage in BugCheckers.
class	SystemExitOutsideMain	Check for calls to System.exit() outside of a main method.
class	SystemOut	A BugChecker; see the associated BugPattern annotation for details.
class	TestExceptionChecker	A BugChecker; see the associated BugPattern annotation for details.
class	TestParametersNotInitialized	Flags uses of parameters in non-parameterized tests.
class	TheoryButNoTheories	Flags uses of @Theory (and others) in non-Theories-run tests.
class	ThreadJoinLoop
class	ThreadLocalUsage	A BugChecker; see the associated BugPattern annotation for details.
class	ThreeLetterTimeZoneID
class	ThrowIfUncheckedKnownChecked	Catches no-op calls to Throwables.throwIfUnchecked.
class	ThrowNull	A BugChecker; see the associated BugPattern annotation for details.
class	ThrowSpecificExceptions	Bugpattern to discourage throwing base exception classes.
class	ThrowsUncheckedException	Suggests to remove the unchecked throws clause.
class	TooManyParameters	A BugChecker; see the associated BugPattern annotation for details.
class	ToStringReturnsNull	ToString should not return null.
class	TransientMisuse	Warns against use of both static and transient modifiers on field declarations.
class	TreeToString	Flags com.sun.source.tree.Tree#toString usage in BugCheckers.
class	TruthAssertExpected	Detects usages of Truth assertions with the expected and actual values reversed.
class	TruthConstantAsserts	Points out if Truth Library assert is called on a constant.
class	TruthGetOrDefault	Flags ambiguous usages of Map#getOrDefault within Truth#assertThat.
class	TruthSelfEquals	Points out if an object is tested for equality/inequality to itself using Truth Libraries.
class	TryFailRefactoring	A BugChecker; see the associated BugPattern annotation for details.
class	TryFailThrowable	A bug checker for the following code pattern:
class	TryWithResourcesVariable	A BugChecker; see the associated BugPattern annotation for details.
class	TypeEqualsChecker	Flags com.sun.tools.javac.code.Type#equals usage.
class	TypeNameShadowing	Warns when a type parameter shadows another type name in scope.
class	TypeParameterNaming	Enforces type parameters match the google style guide.
class	TypeParameterQualifier	A BugChecker; see the associated BugPattern annotation for details.
class	TypeParameterShadowing
class	TypeParameterUnusedInFormals
class	TypeToString	Flags com.sun.tools.javac.code.Type#toString usage in BugCheckers.
class	UndefinedEquals	Flags types which do not have well-defined equals behavior.
class	UngroupedOverloads
class	UnicodeDirectionalityCharacters	Bans, without the possibility of suppression, the use of direction-changing Unicode escapes.
class	UnicodeEscape	Replaces printable ASCII unicode escapes with the literal version.
class	UnicodeInCode	Bans using non-ASCII Unicode characters outside string literals and comments.
class	UnnecessarilyFullyQualified	Flags uses of fully qualified names which are not ambiguous if imported.
class	UnnecessarilyVisible	Suggests restricting the visibility of methods which should only be called by a framework.
class	UnnecessaryAnonymousClass	A BugChecker; see the associated BugPattern annotation for details.
class	UnnecessaryAssignment	Discourage manual initialization or assignment to fields annotated with framework annotations.
class	UnnecessaryBoxedAssignment	Finds and fixes unnecessarily boxed return expressions.
class	UnnecessaryBoxedVariable	Finds and fixes unnecessarily boxed variables.
class	UnnecessaryDefaultInEnumSwitch	A BugChecker; see the associated BugPattern annotation for details.
class	UnnecessaryFinal	Removes final from non-field variables.
class	UnnecessaryLambda	A BugChecker; see the associated BugPattern annotation for details.
class	UnnecessaryMethodInvocationMatcher	Matchers.methodInvocation(Matcher) is not exactly deprecated, but it is legacy, and in particular is not needed when the argument is a MethodMatcher, since MethodMatcher already does the unwrapping that methodInvocation does.
class	UnnecessaryMethodReference	Matches unnecessary uses of method references.
class	UnnecessaryOptionalGet	A refactoring to replace Optional.get() with lambda arg in expressions passed as arg to member functions of Optionals.
class	UnnecessaryParentheses	A BugChecker; see the associated BugPattern annotation for details.
class	UnnecessarySetDefault	A BugChecker; see the associated BugPattern annotation for details.
class	UnnecessaryStaticImport	A BugChecker; see the associated BugPattern annotation for details.
class	UnnecessaryTypeArgument	A BugChecker; see the associated BugPattern annotation for details.
class	UnsafeFinalization	A BugChecker; see the associated BugPattern annotation for details.
class	UnsafeLocaleUsage	Flags unsafe usages of the Locale constructor and class methods.
class	UnsafeReflectiveConstructionCast	Checks unsafe instance creation via reflection.
class	UnsynchronizedOverridesSynchronized	A BugChecker; see the associated BugPattern annotation for details.
class	UnusedAnonymousClass	A BugChecker; see the associated BugPattern annotation for details.
class	UnusedCollectionModifiedInPlace
class	UnusedException	Bugpattern for catch blocks which catch an exception but throw another one without wrapping the original.
class	UnusedMethod	Bugpattern to detect unused declarations.
class	UnusedNestedClass	Bugpattern to detect unused nested classes.
class	UnusedVariable	Bugpattern to detect unused declarations.
class	URLEqualsHashCode	Points out on creation of Set and HashMap of type java.net.URL.
class	UseCorrectAssertInTests
class	UseEnumSwitch	A BugChecker; see the associated BugPattern annotation for details.
class	VarChecker	A BugChecker; see the associated BugPattern annotation for details.
class	VariableNameSameAsType	Check for variables and types with the same name
class	VarTypeName	A BugChecker; see the associated BugPattern annotation for details.
class	WaitNotInLoop
class	WildcardImport	A BugChecker; see the associated BugPattern annotation for details.
class	WithSignatureDiscouraged	MethodMatchers.MethodClassMatcher.withSignature(String) is discouraged: most usages should use .named and/or .withParameters instead.
class	WrongOneof	Matches always-default expressions in oneof switches.
class	XorPower	A BugChecker; see the associated BugPattern annotation for details.

Uses of BugPattern in com.google.errorprone.bugpatterns.android

Classes in com.google.errorprone.bugpatterns.android with annotations of type BugPattern

Modifier and Type	Class	Description
class	BinderIdentityRestoredDangerously
class	BundleDeserializationCast
class	FragmentInjection
class	FragmentNotInstantiable
class	HardCodedSdCardPath
class	IsLoggableTagLength
class	MislabeledAndroidString	Replacement of misleading android.R.string constants with more intuitive ones.
class	ParcelableCreator	BugPattern to detect classes which implement android.os.Parcelable but don't have public static CREATOR.
class	RectIntersectReturnValueIgnored
class	StaticOrDefaultInterfaceMethod
class	WakelockReleasedDangerously

Uses of BugPattern in com.google.errorprone.bugpatterns.apidiff

Classes in com.google.errorprone.bugpatterns.apidiff with annotations of type BugPattern

Modifier and Type	Class	Description
class	AndroidJdkLibsChecker	Checks for uses of classes, fields, or methods that are not compatible with legacy Android devices.
class	Java7ApiChecker	Checks for uses of classes, fields, or methods that are not compatible with JDK 7
class	Java8ApiChecker	Checks for uses of classes, fields, or methods that are not compatible with JDK 8

Uses of BugPattern in com.google.errorprone.bugpatterns.argumentselectiondefects

Classes in com.google.errorprone.bugpatterns.argumentselectiondefects with annotations of type BugPattern

Modifier and Type	Class	Description
class	ArgumentSelectionDefectChecker	Checks the lexical distance between method parameter names and the argument names at call sites.
class	AssertEqualsArgumentOrderChecker	Checker to make sure that assertEquals-like methods are called with the arguments expected and actual the right way round.
class	AutoValueConstructorOrderChecker	Checker to make sure that constructors for AutoValue types are invoked with arguments in the correct order.

Uses of BugPattern in com.google.errorprone.bugpatterns.checkreturnvalue

Classes in com.google.errorprone.bugpatterns.checkreturnvalue with annotations of type BugPattern

Modifier and Type	Class	Description
class	UsingJsr305CheckReturnValue	Checker that recommends using ErrorProne's version of @CheckReturnValue over the version in JSR305 (which is defunct).

Uses of BugPattern in com.google.errorprone.bugpatterns.collectionincompatibletype

Classes in com.google.errorprone.bugpatterns.collectionincompatibletype with annotations of type BugPattern

Modifier and Type	Class	Description
class	CollectionIncompatibleType	Checker for calling Object-accepting methods with types that don't match the type arguments of their container types.
class	CollectionUndefinedEquality	Highlights use of Collection#contains (and others) with types that do not have well-defined equals.
class	CompatibleWithMisuse
class	IncompatibleArgumentType
class	TruthIncompatibleType	A BugChecker; see the associated BugPattern annotation for details.

Uses of BugPattern in com.google.errorprone.bugpatterns.flogger

Classes in com.google.errorprone.bugpatterns.flogger with annotations of type BugPattern

Modifier and Type	Class	Description
class	FloggerArgumentToString	A BugChecker; see the associated BugPattern annotation for details.
class	FloggerFormatString
class	FloggerLogString	Detects invocations of LoggingApi.log(String) for which the argument is not a compile-time constant and provides suggested alternatives.
class	FloggerLogVarargs
class	FloggerLogWithCause	Flags cases where there is an exception available that could be set as the cause in a log message.
class	FloggerMessageFormat
class	FloggerPassedAround	Flags flogger instances being passed around.
class	FloggerRedundantIsEnabled
class	FloggerRequiredModifiers	Ensures that class-level FluentLogger objects are private static final.
class	FloggerSplitLogStatement	Bugpattern to prevent splitting flogger log invocations into multiple statements.
class	FloggerStringConcatenation	A BugChecker; see the associated BugPattern annotation for details.
class	FloggerWithCause	Flogger's withCause(Throwable) method checks
class	FloggerWithoutCause	Detects Flogger log statements that pass Exceptions to the log method instead of using withCause.

Uses of BugPattern in com.google.errorprone.bugpatterns.formatstring

Classes in com.google.errorprone.bugpatterns.formatstring with annotations of type BugPattern

Modifier and Type	Class	Description
class	FormatString	A BugChecker; see the associated BugPattern annotation for details.
class	FormatStringAnnotationChecker	BugChecker to assert validity of methods calls with FormatString annotations.
class	InlineFormatString	A BugChecker; see the associated BugPattern annotation for details.

Uses of BugPattern in com.google.errorprone.bugpatterns.inject

Classes in com.google.errorprone.bugpatterns.inject with annotations of type BugPattern

Modifier and Type	Class	Description
class	AssistedInjectAndInjectOnConstructors
class	AssistedInjectAndInjectOnSameConstructor
class	AutoFactoryAtInject
class	CloseableProvides
class	InjectedConstructorAnnotations	A checker for injected constructors with @Inject(optional=true) or binding annotations.
class	InjectOnConstructorOfAbstractClass
class	InjectOnMemberAndConstructor	Checks if class constructor and members are both annotated as @Inject.
class	InvalidTargetingOnScopingAnnotation
class	JavaxInjectOnAbstractMethod
class	JavaxInjectOnFinalField
class	MisplacedScopeAnnotations	Bug checker for when a scope annotation is used at injection site, which does not have any effect on the injected values.
class	MoreThanOneInjectableConstructor	Matches classes that have two or more constructors annotated with @Inject.
class	MoreThanOneQualifier
class	MoreThanOneScopeAnnotationOnClass	This checker matches if a class has more than one annotation that is a scope annotation(that is, the annotation is either annotated with Guice's @ScopeAnnotation or Javax's @Scope).
class	OverlappingQualifierAndScopeAnnotation
class	QualifierOrScopeOnInjectMethod
class	QualifierWithTypeUse
class	ScopeAnnotationOnInterfaceOrAbstractClass
class	ScopeOrQualifierAnnotationRetention

Uses of BugPattern in com.google.errorprone.bugpatterns.inject.dagger

Classes in com.google.errorprone.bugpatterns.inject.dagger with annotations of type BugPattern

Modifier and Type	Class	Description
class	AndroidInjectionBeforeSuper
class	EmptySetMultibindingContributions
class	PrivateConstructorForNoninstantiableModule
class	ProvidesNull	Bug checker for null-returning methods annotated with @Provides but not @Nullable.
class	RefersToDaggerCodegen	Checks that the only code that refers to Dagger generated code is other Dagger generated code.
class	ScopeOnModule	Migrate users who use JSR 330 scopes on Dagger modules.
class	UseBinds

Uses of BugPattern in com.google.errorprone.bugpatterns.inject.guice

Classes in com.google.errorprone.bugpatterns.inject.guice with annotations of type BugPattern

Modifier and Type	Class	Description
class	AssistedInjectScoping	This checker matches iff *both* of the following conditions are true: 1) The class is assisted: a) If there is a constructor that is annotated with @Inject and that constructor has at least one parameter that is annotated with @Assisted.
class	AssistedParameters
class	BindingToUnqualifiedCommonType
class	InjectOnFinalField
class	OverridesGuiceInjectableMethod	This checker matches methods that 1) are not themselves annotated with @Inject (neither javax.inject.Inject nor com.google.inject.Inject) 2) descend from a method that is annotated with @com.google.inject.Inject
class	OverridesJavaxInjectableMethod	This checker matches methods that 1) are not themselves annotated with @Inject 2) descend from a method that is annotated with @javax.inject.Inject 3) do not descent from a method that is annotated with @com.google.inject.Inject
class	ProvidesMethodOutsideOfModule

Uses of BugPattern in com.google.errorprone.bugpatterns.inlineme

Classes in com.google.errorprone.bugpatterns.inlineme with annotations of type BugPattern

Modifier and Type	Class	Description
class	Inliner	Checker that performs the inlining at call-sites (where the invoked APIs are annotated as @InlineMe).
class	Suggester	Checker that recommends using @InlineMe on single-statement deprecated APIs.
class	Validator	Checker that ensures the @InlineMe annotation is used correctly.

Uses of BugPattern in com.google.errorprone.bugpatterns.javadoc

Classes in com.google.errorprone.bugpatterns.javadoc with annotations of type BugPattern

Modifier and Type	Class	Description
class	AlmostJavadoc	Flags comments which appear to be intended to be Javadoc, but are not started with an extra *.
class	EmptyBlockTag	Matches block tags (@param, @return, @throws, @deprecated) with an empty description.
class	EscapedEntity	Finds unescaped entities in Javadocs.
class	InheritDoc	Matches invalid usage of @inheritDoc.
class	InvalidBlockTag	Matches invalid Javadoc tags, and tries to suggest fixes.
class	InvalidInlineTag	Matches invalid Javadoc tags, and tries to suggest fixes.
class	InvalidLink	Finds some common errors in @link tags.
class	InvalidParam	Matches incorrect Javadoc @param tags.
class	InvalidThrows	Matches errors in Javadoc @throws tags.
class	InvalidThrowsLink	Matches misuse of link tags within throws tags.
class	MalformedInlineTag	Finds malformed inline tags where @{tag is used instead of {@tag.
class	MissingSummary	Matches Javadocs which are missing a required summary line.
class	ReturnFromVoid	Finds common Javadoc errors, and tries to suggest useful fixes.
class	UnescapedEntity	Finds unescaped entities in Javadocs.
class	UnrecognisedJavadocTag	Flags tags which haven't been recognised by the Javadoc parser.
class	UrlInSee	Discourages using URLs in @see tags.

Uses of BugPattern in com.google.errorprone.bugpatterns.nullness

Classes in com.google.errorprone.bugpatterns.nullness with annotations of type BugPattern

Modifier and Type	Class	Description
class	EqualsBrokenForNull	BugChecker adds a null check to equals() method implementations which don't satisfy the null contract of Object.equals(java.lang.Object) i.e.
class	EqualsMissingNullable	A BugChecker; see the associated BugPattern annotation for details.
class	FieldMissingNullable	A BugChecker; see the associated BugPattern annotation for details.
class	ParameterMissingNullable	A BugChecker; see the associated BugPattern annotation for details.
class	ReturnMissingNullable	A BugChecker; see the associated BugPattern annotation for details.
class	UnnecessaryCheckNotNull	Checks for unnecessarily performing null checks on expressions which can't be null.
class	VoidMissingNullable	A BugChecker; see the associated BugPattern annotation for details.

Uses of BugPattern in com.google.errorprone.bugpatterns.overloading

Classes in com.google.errorprone.bugpatterns.overloading with annotations of type BugPattern

Modifier and Type	Class	Description
class	InconsistentOverloads	A BugChecker that detects inconsistently overloaded methods in Java classes.

Uses of BugPattern in com.google.errorprone.bugpatterns.threadsafety

Classes in com.google.errorprone.bugpatterns.threadsafety with annotations of type BugPattern

Modifier and Type	Class	Description
class	DoubleCheckedLocking	A BugChecker; see the associated BugPattern annotation for details.
class	GuardedByChecker	A BugChecker; see the associated BugPattern annotation for details.
class	ImmutableAnnotationChecker	A BugChecker; see the associated BugPattern annotation for details.
class	ImmutableChecker	A BugChecker; see the associated BugPattern annotation for details.
class	ImmutableEnumChecker	A BugChecker; see the associated BugPattern annotation for details.
class	ImmutableRefactoring	A BugChecker; see the associated BugPattern annotation for details.
class	LockMethodChecker
class	StaticGuardedByInstance	A BugChecker; see the associated BugPattern annotation for details.
class	SynchronizeOnNonFinalField	A BugChecker; see the associated BugPattern annotation for details.
class	ThreadPriorityCheck	Bug checker to detect usage of Thread.stop(), Thread.yield(), and changing thread priorities.
class	UnlockMethodChecker

Uses of BugPattern in com.google.errorprone.bugpatterns.time

Classes in com.google.errorprone.bugpatterns.time with annotations of type BugPattern

Modifier and Type	Class	Description
class	DateChecker	Warns against suspect looking calls to Date APIs.
class	DurationFrom	Bans calls to Duration.from(temporalAmount) where temporalAmount is a Period.
class	DurationGetTemporalUnit	Bans calls to Duration.get(temporalUnit) where temporalUnit is not SECONDS or NANOS.
class	DurationTemporalUnit	Bans calls to Duration APIs where the TemporalUnit is not ChronoUnit.DAYS or it has an estimated duration (which is guaranteed to throw an DateTimeException).
class	DurationToLongTimeUnit	Reports an error when a Duration or Instant is incorrectly decomposed in order to call an API which accepts a <long, TimeUnit> pair.
class	FromTemporalAccessor	Bans calls to javaTimeType.from(temporalAmount) where the call is guaranteed to either: throw a DateTimeException at runtime (e.g., LocalDate.from(month)) return the same parameter (e.g., Instant.from(instant))
class	InstantTemporalUnit	Bans calls to Instant APIs where the TemporalUnit is not one of: NANOS, MICROS, MILLIS, SECONDS, MINUTES, HOURS, HALF_DAYS, or DAYS.
class	InvalidJavaTimeConstant	This checker errors on calls to java.time methods using values that are guaranteed to throw a DateTimeException.
class	JavaDurationGetSecondsGetNano	This checker warns about calls to duration.getNano() without a corresponding "nearby" call to duration.getSeconds().
class	JavaDurationWithNanos	Check for calls to duration.withNanos(int).
class	JavaDurationWithSeconds	Check for calls to duration.withSeconds(long).
class	JavaInstantGetSecondsGetNano	This checker warns about calls to instant.getNano() without a corresponding "nearby" call to instant.getEpochSecond().
class	JavaLocalDateTimeGetNano	This checker warns about calls to LocalDateTime.getNano() without a corresponding "nearby" call to LocalDateTime.getSecond().
class	JavaLocalTimeGetNano	This checker warns about calls to LocalTime.getNano() without a corresponding "nearby" call to LocalTime.getSecond().
class	JavaPeriodGetDays	This checker warns about calls to period.getDays() without a corresponding "nearby" call to period.getYears(), period.getMonths(), or period.getTotalMonths().
class	JavaTimeDefaultTimeZone	Check for calls to java.time APIs that silently use the default system time-zone.
class	JodaConstructors	Check for calls to bad JodaTime constructors.
class	JodaDateTimeConstants	Checks for usages of dangerous DateTimeConstants constants.
class	JodaDurationWithMillis	Check for calls to duration.withMillis(long).
class	JodaInstantWithMillis	Check for calls to instant.withMillis(long).
class	JodaNewPeriod	Match possibly incorrect use of Period to obtain a number of (e.g.) days between two dates.
class	JodaPlusMinusLong	Check for calls to JodaTime's type.plus(long) and type.minus(long) where <type> = {Duration,Instant,DateTime,DateMidnight}.
class	JodaTimeConverterManager	Ban usage of Joda's ConverterManager.
class	JodaToSelf	Check for calls to Joda-Time's foo.toFoo() and new Foo(foo).
class	JodaWithDurationAddedLong	Check for calls to JodaTime's type.withDurationAdded(long, int) where <type> = {Duration,Instant,DateTime}.
class	LocalDateTemporalAmount	Bans calls to LocalDate.plus(TemporalAmount) and LocalDate.minus(TemporalAmount) where the TemporalAmount is a non-zero Duration.
class	PeriodFrom	Bans calls to Period.from(temporalAmount) where temporalAmount is a Duration.
class	PeriodGetTemporalUnit	Bans calls to Period.get(temporalUnit) where temporalUnit is not YEARS, MONTHS, or DAYS.
class	PeriodTimeMath	Bans calls to Period#plus/minus(TemporalAmount) where the argument is a Duration.
class	PreferJavaTimeOverload	This check suggests the use of java.time-based APIs, when available.
class	ProtoDurationGetSecondsGetNano	This checker warns about accessing the underlying nanosecond-adjustment field of a duration without a "nearby" access of the underlying seconds field.
class	ProtoTimestampGetSecondsGetNano	This checker warns about accessing the underlying nanosecond-adjustment field of a protobuf timestamp without a "nearby" access of the underlying seconds field.
class	StronglyTypeTime	Flags fields which would be better expressed as time types rather than primitive integers.
class	TemporalAccessorGetChronoField	Bans calls to TemporalAccessor.get(ChronoField) where the implementation is guaranteed to throw an UnsupportedTemporalTypeException.
class	TimeUnitConversionChecker	Check for problematic or suspicious TimeUnit conversion calls.
class	TimeUnitMismatch	Checker that detects likely time-unit mismatches by looking at identifier names.
class	ZoneIdOfZ	This checker bans calls to ZoneId.of("Z") in favor of ZoneOffset.UTC.