ruleset.xml

<?xml version="1.0"?>

<ruleset name="Countly PMD Java, Android rules"
    xmlns="http://pmd.sourceforge.net/ruleset/2.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://pmd.sourceforge.net/ruleset/2.0.0 https://pmd.sourceforge.io/ruleset_2_0_0.xsd">

    <description>
        Countly PMD Java, Android rules
    </description>

    <!-- Best practices rules -->
    <rule ref="category/java/bestpractices.xml/AbstractClassWithoutAbstractMethod" />
    <rule ref="category/java/bestpractices.xml/AccessorClassGeneration" />
    <rule ref="category/java/bestpractices.xml/AccessorMethodGeneration" />
    <rule ref="category/java/bestpractices.xml/ArrayIsStoredDirectly" /><!--???-->
    <rule ref="category/java/bestpractices.xml/AvoidMessageDigestField" />
    <rule ref="category/java/bestpractices.xml/AvoidPrintStackTrace" />
    <rule ref="category/java/bestpractices.xml/AvoidReassigningCatchVariables" />
    <rule ref="category/java/bestpractices.xml/AvoidReassigningLoopVariables" />
    <rule ref="category/java/bestpractices.xml/AvoidReassigningParameters" />
    <rule ref="category/java/bestpractices.xml/AvoidStringBufferField" />
    <rule ref="category/java/bestpractices.xml/AvoidUsingHardCodedIP" />
    <rule ref="category/java/bestpractices.xml/CheckResultSet" />
    <rule ref="category/java/bestpractices.xml/ConstantsInInterface" />
    <rule ref="category/java/bestpractices.xml/DefaultLabelNotLastInSwitchStmt" />
    <rule ref="category/java/bestpractices.xml/DoubleBraceInitialization" />
    <rule ref="category/java/bestpractices.xml/ForLoopCanBeForeach" />
    <rule ref="category/java/bestpractices.xml/ForLoopVariableCount" />
    <rule ref="category/java/bestpractices.xml/GuardLogStatement" />
    <rule ref="category/java/bestpractices.xml/JUnit4SuitesShouldUseSuiteAnnotation" />
    <rule ref="category/java/bestpractices.xml/JUnit4TestShouldUseAfterAnnotation" />
    <rule ref="category/java/bestpractices.xml/JUnit4TestShouldUseBeforeAnnotation" />
    <rule ref="category/java/bestpractices.xml/JUnit4TestShouldUseTestAnnotation" />
    <rule ref="category/java/bestpractices.xml/JUnit5TestShouldBePackagePrivate" />
    <rule ref="category/java/bestpractices.xml/JUnitUseExpected" />
    <rule ref="category/java/bestpractices.xml/LiteralsFirstInComparisons" />
    <rule ref="category/java/bestpractices.xml/LooseCoupling" />
    <rule ref="category/java/bestpractices.xml/MethodReturnsInternalArray" /><!--???-->
    <rule ref="category/java/bestpractices.xml/MissingOverride" />
    <rule ref="category/java/bestpractices.xml/OneDeclarationPerLine" />
    <rule ref="category/java/bestpractices.xml/PreserveStackTrace" />
    <rule ref="category/java/bestpractices.xml/PrimitiveWrapperInstantiation" />
    <rule ref="category/java/bestpractices.xml/ReplaceEnumerationWithIterator" />
    <rule ref="category/java/bestpractices.xml/ReplaceHashtableWithMap" />
    <rule ref="category/java/bestpractices.xml/ReplaceVectorWithList" />
    <rule ref="category/java/bestpractices.xml/SimplifiableTestAssertion" />
    <rule ref="category/java/bestpractices.xml/SwitchStmtsShouldHaveDefault" />
    <rule ref="category/java/bestpractices.xml/SystemPrintln" />
    <rule ref="category/java/bestpractices.xml/UnusedAssignment" /> <!-- @SuppressWarnings("unused") -->
    <rule ref="category/java/bestpractices.xml/UnusedFormalParameter" /><!--???-->
    <rule ref="category/java/bestpractices.xml/UnusedLocalVariable" /><!--???-->
    <rule ref="category/java/bestpractices.xml/UnusedPrivateField" /><!--???-->
    <rule ref="category/java/bestpractices.xml/UnusedPrivateMethod" /><!--???-->
    <rule ref="category/java/bestpractices.xml/UseCollectionIsEmpty" />
    <rule ref="category/java/bestpractices.xml/UseStandardCharsets" />
    <rule ref="category/java/bestpractices.xml/UseTryWithResources" />
    <rule ref="category/java/bestpractices.xml/WhileLoopWithLiteralBoolean" />

    <!--
    <rule ref="category/java/bestpractices.xml/JUnitAssertionsShouldIncludeMessage" />
    <rule ref="category/java/bestpractices.xml/JUnitTestContainsTooManyAsserts">
        <properties>
            <property name="maximumAsserts" value="1" />
        </properties>
    </rule>
    <rule ref="category/java/bestpractices.xml/JUnitTestsShouldIncludeAssert" />
    <rule ref="category/java/bestpractices.xml/UseVarargs" />
    -->

    <!-- Code Style rules -->    
    <rule ref="category/java/codestyle.xml/AvoidDollarSigns" />
    <rule ref="category/java/codestyle.xml/AvoidProtectedFieldInFinalClass" />
    <rule ref="category/java/codestyle.xml/AvoidProtectedMethodInFinalClassNotExtending" />
    <rule ref="category/java/codestyle.xml/AvoidUsingNativeCode" />
    <rule ref="category/java/codestyle.xml/BooleanGetMethodName" />
    <rule ref="category/java/codestyle.xml/CallSuperInConstructor" />
    <rule ref="category/java/codestyle.xml/ConfusingTernary" />
    <rule ref="category/java/codestyle.xml/ControlStatementBraces" />
    <rule ref="category/java/codestyle.xml/EmptyControlStatement" /><!--???-->
    <rule ref="category/java/codestyle.xml/EmptyMethodInAbstractClassShouldBeAbstract" />
    <rule ref="category/java/codestyle.xml/ExtendsObject" />
    <rule ref="category/java/codestyle.xml/FieldDeclarationsShouldBeAtStartOfClass" />
    <rule ref="category/java/codestyle.xml/ForLoopShouldBeWhileLoop" />
    <rule ref="category/java/codestyle.xml/GenericsNaming" />
    <rule ref="category/java/codestyle.xml/IdenticalCatchBranches" />
    <rule ref="category/java/codestyle.xml/LinguisticNaming" /><!--???-->
    <rule ref="category/java/codestyle.xml/LocalHomeNamingConvention" />
    <rule ref="category/java/codestyle.xml/LocalInterfaceSessionNamingConvention" />    
    <rule ref="category/java/codestyle.xml/LongVariable">
        <properties>
            <property name="minimum" value="50" />
        </properties>
    </rule>
    <rule ref="category/java/codestyle.xml/MDBAndSessionBeanNamingConvention" />
    <!--
    <rule ref="category/java/codestyle.xml/MethodArgumentCouldBeFinal" />
    -->
    <rule ref="category/java/codestyle.xml/NoPackage" />    
    <rule ref="category/java/codestyle.xml/PrematureDeclaration" />
    <rule ref="category/java/codestyle.xml/RemoteInterfaceNamingConvention" />
    <rule ref="category/java/codestyle.xml/RemoteSessionInterfaceNamingConvention" />
    <rule ref="category/java/codestyle.xml/ShortClassName">
        <properties>
            <property name="minimum" value="3" />
        </properties>
    </rule>        
    <rule ref="category/java/codestyle.xml/TooManyStaticImports">
        <properties>
            <property name="maximumStaticImports" value="2" />
        </properties>
    </rule>
    <rule ref="category/java/codestyle.xml/UnnecessaryAnnotationValueElement" /><!--???-->
    <rule ref="category/java/codestyle.xml/UnnecessaryCast" />
    <rule ref="category/java/codestyle.xml/UnnecessaryConstructor" /><!--???-->
    <rule ref="category/java/codestyle.xml/UnnecessaryFullyQualifiedName" /><!--???-->
    <rule ref="category/java/codestyle.xml/UnnecessaryImport" />
    <rule ref="category/java/codestyle.xml/UnnecessaryModifier" />
    <rule ref="category/java/codestyle.xml/UnnecessaryReturn" />
    <rule ref="category/java/codestyle.xml/UnnecessarySemicolon" />
    <rule ref="category/java/codestyle.xml/UseDiamondOperator" />
    <rule ref="category/java/codestyle.xml/UselessParentheses" />
    <rule ref="category/java/codestyle.xml/UselessQualifiedThis" />
    <rule ref="category/java/codestyle.xml/UseShortArrayInitializer" />
    <rule ref="category/java/codestyle.xml/UseUnderscoresInNumericLiterals"><!--???-->
        <properties>
            <property name="acceptableDecimalLength" value="4" />
        </properties>
    </rule>

    <!--
    <rule ref="category/java/codestyle.xml/ShortMethodName">
        <properties>
            <property name="minimum" value="3" />
        </properties>
    </rule>
    <rule ref="category/java/codestyle.xml/ShortVariable">
        <properties>
            <property name="minimum" value="3" />
        </properties>
    </rule>
    <rule ref="category/java/codestyle.xml/OnlyOneReturn" />
    <rule ref="category/java/codestyle.xml/LocalVariableCouldBeFinal" />
    <rule ref="category/java/codestyle.xml/AtLeastOneConstructor" />
    <rule ref="category/java/codestyle.xml/ClassNamingConventions">
        <properties>
            <property name="classPattern" value="[A-Z][a-zA-Z0-9]*" />
            <property name="abstractClassPattern" value="[A-Z][a-zA-Z0-9]*" />
            <property name="interfacePattern" value="[A-Z][a-zA-Z0-9]*" />
            <property name="enumPattern" value="[A-Z][a-zA-Z0-9]*" />
            <property name="annotationPattern" value="[A-Z][a-zA-Z0-9]*" />
            <property name="utilityClassPattern" value="[A-Z][a-zA-Z0-9]*" />
            <property name="testClassPattern" value="^Test.*$|^[A-Z][a-zA-Z0-9]*Test(s|Case)?$" />
        </properties>
    </rule>
    <rule ref="category/java/codestyle.xml/CommentDefaultAccessModifier" />
    <rule ref="category/java/codestyle.xml/FieldNamingConventions">
        <properties>
            <property name="publicConstantPattern" value="[A-Z][A-Z_0-9]*" />
            <property name="constantPattern" value="[A-Z][A-Z_0-9]*" />
            <property name="enumConstantPattern" value="[A-Z][A-Z_0-9]*" />
            <property name="finalFieldPattern" value="[a-z][a-zA-Z0-9]*" />
            <property name="staticFieldPattern" value="[a-z][a-zA-Z0-9]*" />
            <property name="defaultFieldPattern" value="[a-z][a-zA-Z0-9]*" />
            <property name="exclusions" value="serialVersionUID|serialPersistentFields" />
        </properties>
    </rule>
    <rule ref="category/java/codestyle.xml/FormalParameterNamingConventions">
        <properties>
            <property name="methodParameterPattern" value="[a-z][a-zA-Z0-9]*" />
            <property name="finalMethodParameterPattern" value="[a-z][a-zA-Z0-9]*" />
            <property name="lambdaParameterPattern" value="[a-z][a-zA-Z0-9]*" />
            <property name="explicitLambdaParameterPattern" value="[a-z][a-zA-Z0-9]*" />
        </properties>
    </rule>
    <rule ref="category/java/codestyle.xml/LocalVariableNamingConventions">
        <properties>
            <property name="localVarPattern" value="[a-z][a-zA-Z0-9]*" />
            <property name="finalVarPattern" value="[a-z][a-zA-Z0-9]*" />
            <property name="catchParameterPattern" value="[a-z][a-zA-Z0-9]*" />
        </properties>
    </rule>
    <rule ref="category/java/codestyle.xml/MethodNamingConventions">
        <properties>
            <property name="methodPattern" value="[a-z][a-zA-Z0-9]*" />
            <property name="staticPattern" value="[a-z][a-zA-Z0-9]*" />
            <property name="nativePattern" value="[a-z][a-zA-Z0-9]*" />
            <property name="junit3TestPattern" value="test[A-Z0-9][a-zA-Z0-9]*" />
            <property name="junit4TestPattern" value="[a-z][a-zA-Z0-9]*" />
            <property name="junit5TestPattern" value="[a-z][a-zA-Z0-9]*" />
        </properties>
    </rule>
    <rule ref="category/java/codestyle.xml/PackageCase" />
    <rule ref="category/java/codestyle.xml/UnnecessaryLocalBeforeReturn" />
    -->

    <!-- Design rules -->
    <rule ref="category/java/design.xml/AbstractClassWithoutAnyMethod" />    
    <rule ref="category/java/design.xml/AvoidDeeplyNestedIfStmts">
        <properties>
            <property name="problemDepth" value="5" />
        </properties>
    </rule>
    <rule ref="category/java/design.xml/AvoidRethrowingException" />
    <rule ref="category/java/design.xml/AvoidThrowingNewInstanceOfSameException" />
    <rule ref="category/java/design.xml/AvoidThrowingNullPointerException" />
    <rule ref="category/java/design.xml/AvoidThrowingRawExceptionTypes" /><!--???-->
    <rule ref="category/java/design.xml/AvoidUncheckedExceptionsInSignatures" />
    <rule ref="category/java/design.xml/ClassWithOnlyPrivateConstructorsShouldBeFinal" />
    <rule ref="category/java/design.xml/CognitiveComplexity"><!--???-->
        <properties>
            <property name="reportLevel" value="20" />
        </properties>
    </rule>
    <rule ref="category/java/design.xml/CollapsibleIfStatements" /><!--???-->
    <rule ref="category/java/design.xml/CouplingBetweenObjects"><!--???-->
        <properties>
            <property name="threshold" value="20" />
        </properties>
    </rule>
    <rule ref="category/java/design.xml/CyclomaticComplexity"><!--???-->
        <properties>
            <property name="classReportLevel" value="100" />
            <property name="methodReportLevel" value="20" />
            <property name="cycloOptions" value="" />
        </properties>
    </rule>
    <rule ref="category/java/design.xml/DoNotExtendJavaLangError" />
    <rule ref="category/java/design.xml/ExceptionAsFlowControl" />
    <rule ref="category/java/design.xml/ExcessiveImports" />
    <rule ref="category/java/design.xml/ExcessiveParameterList">
        <properties>
            <property name="minimum" value="10.0" />
        </properties>
    </rule>
    <rule ref="category/java/design.xml/ExcessivePublicCount">
        <properties>
            <property name="minimum" value="55.0" />
        </properties>
    </rule>
    <rule ref="category/java/design.xml/FinalFieldCouldBeStatic" />    
    <rule ref="category/java/design.xml/ImmutableField" />
    <rule ref="category/java/design.xml/InvalidJavaBean" />
    <rule ref="category/java/design.xml/LogicInversion" />
    <rule ref="category/java/design.xml/LoosePackageCoupling" /><!--???-->    
    <rule ref="category/java/design.xml/NcssCount"><!--???-->
        <properties>
            <property name="methodReportLevel" value="100" />
            <property name="classReportLevel" value="2000" />
            <property name="ncssOptions" value="" />
        </properties>
    </rule>
    <rule ref="category/java/design.xml/NPathComplexity"><!--???-->
        <properties>
            <property name="reportLevel" value="250" />
        </properties>
    </rule>
    <rule ref="category/java/design.xml/SignatureDeclareThrowsException" />
    <rule ref="category/java/design.xml/SimplifiedTernary" />
    <rule ref="category/java/design.xml/SimplifyBooleanExpressions" />    
    <rule ref="category/java/design.xml/SimplifyConditional" />
    <rule ref="category/java/design.xml/SingularField" />
    <rule ref="category/java/design.xml/SwitchDensity" />
    <rule ref="category/java/design.xml/TooManyFields">
        <properties>
            <property name="maxfields" value="35" />
        </properties>
    </rule>
    <rule ref="category/java/design.xml/TooManyMethods">
        <properties>
            <property name="maxmethods" value="100" />
        </properties>
    </rule>
    <rule ref="category/java/design.xml/UselessOverridingMethod" />
    <rule ref="category/java/design.xml/UseObjectForClearerAPI" />
    <rule ref="category/java/design.xml/UseUtilityClass" /><!--???-->

    <!--
    <rule ref="category/java/design.xml/SimplifyBooleanReturns" />
    <rule ref="category/java/design.xml/MutableStaticState" />
    <rule ref="category/java/design.xml/GodClass" />
    <rule ref="category/java/design.xml/AvoidCatchingGenericException" />
    <rule ref="category/java/design.xml/DataClass" />
    <rule ref="category/java/design.xml/LawOfDemeter" />
    -->

    <!-- Documentation rules -->
    <rule ref="category/java/documentation.xml/CommentContent" />
    <!--
    <rule ref="category/java/documentation.xml/CommentRequired">
        <properties>
            <property name="methodWithOverrideCommentRequirement" value="Ignored" />
            <property name="accessorCommentRequirement" value="Ignored" />
            <property name="classCommentRequirement" value="Ignored" />
            <property name="fieldCommentRequirement" value="Ignored" />
            <property name="publicMethodCommentRequirement" value="Required" />
            <property name="protectedMethodCommentRequirement" value="Ignored" />
            <property name="enumCommentRequirement" value="Required" />
            <property name="serialVersionUIDCommentRequired" value="Ignored" />
            <property name="serialPersistentFieldsCommentRequired" value="Ignored" />
        </properties>
    </rule>
    -->
    <rule ref="category/java/documentation.xml/CommentSize">
        <properties>
            <property name="maxLines" value="10" />
            <property name="maxLineLength" value="200" />
        </properties>
    </rule>
    <rule ref="category/java/documentation.xml/UncommentedEmptyConstructor" />    

    <!--
    <rule ref="category/java/documentation.xml/UncommentedEmptyMethodBody" />
    -->

    <!-- Error Prone rules -->
    <rule ref="category/java/errorprone.xml/AssignmentInOperand" />
    <rule ref="category/java/errorprone.xml/AssignmentToNonFinalStatic" />
    <rule ref="category/java/errorprone.xml/AvoidAccessibilityAlteration" />
    <rule ref="category/java/errorprone.xml/AvoidAssertAsIdentifier" />
    <rule ref="category/java/errorprone.xml/AvoidBranchingStatementAsLastInLoop" />
    <rule ref="category/java/errorprone.xml/AvoidCallingFinalize" />
    <rule ref="category/java/errorprone.xml/AvoidCatchingNPE" />
    <rule ref="category/java/errorprone.xml/AvoidCatchingThrowable" /><!--???-->
    <rule ref="category/java/errorprone.xml/AvoidDecimalLiteralsInBigDecimalConstructor" />
    <!--
    <rule ref="category/java/errorprone.xml/AvoidDuplicateLiterals" />
    -->
    <rule ref="category/java/errorprone.xml/AvoidEnumAsIdentifier" />
    <rule ref="category/java/errorprone.xml/AvoidFieldNameMatchingMethodName" />
    <rule ref="category/java/errorprone.xml/AvoidFieldNameMatchingTypeName" />
    <rule ref="category/java/errorprone.xml/AvoidInstanceofChecksInCatchClause" />
    <rule ref="category/java/errorprone.xml/AvoidLiteralsInIfCondition" /><!--???-->
    <rule ref="category/java/errorprone.xml/AvoidLosingExceptionInformation" />
    <rule ref="category/java/errorprone.xml/AvoidMultipleUnaryOperators" />
    <rule ref="category/java/errorprone.xml/AvoidUsingOctalValues" />
    <rule ref="category/java/errorprone.xml/BrokenNullCheck" />
    <rule ref="category/java/errorprone.xml/CallSuperFirst" />
    <rule ref="category/java/errorprone.xml/CallSuperLast" />
    <rule ref="category/java/errorprone.xml/CheckSkipResult" />
    <rule ref="category/java/errorprone.xml/ClassCastExceptionWithToArray" />
    <rule ref="category/java/errorprone.xml/CloneMethodMustBePublic" />
    <rule ref="category/java/errorprone.xml/CloneMethodMustImplementCloneable" />
    <rule ref="category/java/errorprone.xml/CloneMethodReturnTypeMustMatchClassName" />
    <rule ref="category/java/errorprone.xml/CloseResource" />
    <rule ref="category/java/errorprone.xml/CompareObjectsWithEquals" />
    <rule ref="category/java/errorprone.xml/ComparisonWithNaN" />
    <rule ref="category/java/errorprone.xml/ConstructorCallsOverridableMethod" />
    <rule ref="category/java/errorprone.xml/DetachedTestCase" />
    <rule ref="category/java/errorprone.xml/DoNotCallGarbageCollectionExplicitly" />
    <rule ref="category/java/errorprone.xml/DoNotExtendJavaLangThrowable" />
    <rule ref="category/java/errorprone.xml/DoNotHardCodeSDCard" />
    <rule ref="category/java/errorprone.xml/DoNotTerminateVM" />
    <rule ref="category/java/errorprone.xml/DoNotThrowExceptionInFinally" />
    <rule ref="category/java/errorprone.xml/DontImportSun" />
    <rule ref="category/java/errorprone.xml/DontUseFloatTypeForLoopIndices" />
    <rule ref="category/java/errorprone.xml/EmptyCatchBlock" />
    <rule ref="category/java/errorprone.xml/EmptyFinalizer" />
    <rule ref="category/java/errorprone.xml/EqualsNull" />
    <rule ref="category/java/errorprone.xml/FinalizeDoesNotCallSuperFinalize" />
    <rule ref="category/java/errorprone.xml/FinalizeOnlyCallsSuperFinalize" />
    <rule ref="category/java/errorprone.xml/FinalizeOverloaded" />
    <rule ref="category/java/errorprone.xml/FinalizeShouldBeProtected" />
    <rule ref="category/java/errorprone.xml/IdempotentOperations" />
    <rule ref="category/java/errorprone.xml/ImplicitSwitchFallThrough" />
    <rule ref="category/java/errorprone.xml/InstantiationToGetClass" />
    <rule ref="category/java/errorprone.xml/InvalidLogMessageFormat" />
    <rule ref="category/java/errorprone.xml/JumbledIncrementer" />
    <rule ref="category/java/errorprone.xml/JUnitSpelling" />
    <rule ref="category/java/errorprone.xml/JUnitStaticSuite" />
    <rule ref="category/java/errorprone.xml/MethodWithSameNameAsEnclosingClass" />
    <rule ref="category/java/errorprone.xml/MisplacedNullCheck" />
    <rule ref="category/java/errorprone.xml/MissingSerialVersionUID" />
    <rule ref="category/java/errorprone.xml/MissingStaticMethodInNonInstantiatableClass" />
    <rule ref="category/java/errorprone.xml/MoreThanOneLogger" />
    <rule ref="category/java/errorprone.xml/NonCaseLabelInSwitchStatement" />
    <rule ref="category/java/errorprone.xml/NonSerializableClass" />
    <rule ref="category/java/errorprone.xml/NonStaticInitializer" />    
    <rule ref="category/java/errorprone.xml/OverrideBothEqualsAndHashcode" />
    <rule ref="category/java/errorprone.xml/ProperCloneImplementation" />
    <rule ref="category/java/errorprone.xml/ProperLogger" />
    <rule ref="category/java/errorprone.xml/ReturnEmptyCollectionRatherThanNull" /><!--???-->
    <rule ref="category/java/errorprone.xml/ReturnFromFinallyBlock" />
    <rule ref="category/java/errorprone.xml/SimpleDateFormatNeedsLocale" />
    <rule ref="category/java/errorprone.xml/SingleMethodSingleton" />
    <rule ref="category/java/errorprone.xml/SingletonClassReturningNewInstance" />
    <rule ref="category/java/errorprone.xml/StaticEJBFieldShouldBeFinal" />
    <rule ref="category/java/errorprone.xml/StringBufferInstantiationWithChar" />
    <rule ref="category/java/errorprone.xml/SuspiciousEqualsMethodName" />
    <rule ref="category/java/errorprone.xml/SuspiciousHashcodeMethodName" />
    <rule ref="category/java/errorprone.xml/SuspiciousOctalEscape" />
    <rule ref="category/java/errorprone.xml/TestClassWithoutTestCases" />
    <rule ref="category/java/errorprone.xml/UnconditionalIfStatement" />
    <rule ref="category/java/errorprone.xml/UnnecessaryBooleanAssertion" />
    <rule ref="category/java/errorprone.xml/UnnecessaryCaseChange" />
    <rule ref="category/java/errorprone.xml/UnnecessaryConversionTemporary" />
    <rule ref="category/java/errorprone.xml/UnusedNullCheckInEquals" />
    <rule ref="category/java/errorprone.xml/UseCorrectExceptionLogging" />
    <rule ref="category/java/errorprone.xml/UseEqualsToCompareStrings" />
    <rule ref="category/java/errorprone.xml/UselessOperationOnImmutable" />
    <rule ref="category/java/errorprone.xml/UseLocaleWithCaseConversions" />
    <rule ref="category/java/errorprone.xml/UseProperClassLoader" />

    <!--
    <rule ref="category/java/errorprone.xml/NullAssignment" />
    -->

    <!-- Multithreading rules -->    
    <rule ref="category/java/multithreading.xml/AvoidThreadGroup" />
    <rule ref="category/java/multithreading.xml/AvoidUsingVolatile" />
    <rule ref="category/java/multithreading.xml/DontCallThreadRun" />
    <rule ref="category/java/multithreading.xml/DoubleCheckedLocking" />
    <rule ref="category/java/multithreading.xml/NonThreadSafeSingleton" />
    <rule ref="category/java/multithreading.xml/UnsynchronizedStaticFormatter" />
    <rule ref="category/java/multithreading.xml/UseConcurrentHashMap" />
    <rule ref="category/java/multithreading.xml/UseNotifyAllInsteadOfNotify" />

    <!--
    <rule ref="category/java/multithreading.xml/AvoidSynchronizedAtMethodLevel" />
    <rule ref="category/java/multithreading.xml/DoNotUseThreads" />
    -->

    <!-- Performance rules -->
    <rule ref="category/java/performance.xml/AddEmptyString" />
    <rule ref="category/java/performance.xml/AppendCharacterWithChar" />
    <rule ref="category/java/performance.xml/AvoidArrayLoops" />
    <rule ref="category/java/performance.xml/AvoidCalendarDateCreation" />
    <rule ref="category/java/performance.xml/AvoidFileStream" />
    <rule ref="category/java/performance.xml/AvoidInstantiatingObjectsInLoops" />
    <rule ref="category/java/performance.xml/BigIntegerInstantiation" />    
    <rule ref="category/java/performance.xml/ConsecutiveLiteralAppends" />
    <rule ref="category/java/performance.xml/InefficientEmptyStringCheck" />
    <rule ref="category/java/performance.xml/InefficientStringBuffering" />
    <rule ref="category/java/performance.xml/InsufficientStringBufferDeclaration" />
    <rule ref="category/java/performance.xml/OptimizableToArrayCall" />    
    <rule ref="category/java/performance.xml/SimplifyStartsWith" />
    <rule ref="category/java/performance.xml/StringInstantiation" />
    <rule ref="category/java/performance.xml/StringToString" />
    <rule ref="category/java/performance.xml/TooFewBranchesForASwitchStatement" />
    <rule ref="category/java/performance.xml/UnnecessaryWrapperObjectCreation" />
    <rule ref="category/java/performance.xml/UseArrayListInsteadOfVector" />
    <rule ref="category/java/performance.xml/UseArraysAsList" />
    <rule ref="category/java/performance.xml/UseIndexOfChar" />
    <rule ref="category/java/performance.xml/UseIOStreamsWithApacheCommonsFileItem" />
    <rule ref="category/java/performance.xml/UselessStringValueOf" />
    <rule ref="category/java/performance.xml/UseStringBufferForStringAppends" />
    <rule ref="category/java/performance.xml/UseStringBufferLength" />

    <!--
    <rule ref="category/java/performance.xml/RedundantFieldInitializer" />
    <rule ref="category/java/performance.xml/ConsecutiveAppendsShouldReuse" />
    -->

    <!-- Security rules -->
    <rule ref="category/java/security.xml/HardCodedCryptoKey" />
    <rule ref="category/java/security.xml/InsecureCryptoIv" />

</ruleset>