pmd.xml

<?xml version="1.0" encoding="UTF-8"?>
<ruleset name="Default Maven PMD Plugin Ruleset"
         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 http://pmd.sourceforge.net/ruleset_2_0_0.xsd">

    <description>
        The default ruleset used by the Maven PMD Plugin, when no other ruleset is specified.
        It contains the rules of the old (pre PMD 6.0.0) rulesets java-basic, java-empty, java-imports,
        java-unnecessary, java-unusedcode.

        This ruleset might be used as a starting point for an own customized ruleset [0].

        [0] https://pmd.github.io/latest/pmd_userdocs_making_rulesets.html
    </description>

    <rule ref="category/java/bestpractices.xml/AvoidUsingHardCodedIP"/>
    <rule ref="category/java/bestpractices.xml/CheckResultSet"/>
    <rule ref="category/java/bestpractices.xml/PrimitiveWrapperInstantiation"/>
    <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/codestyle.xml/EmptyControlStatement"/>
    <rule ref="category/java/codestyle.xml/ExtendsObject"/>
    <rule ref="category/java/codestyle.xml/ForLoopShouldBeWhileLoop"/>
    <!--    <rule ref="category/java/codestyle.xml/TooManyStaticImports" />-->
    <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/UselessParentheses"/>
    <rule ref="category/java/codestyle.xml/UselessQualifiedThis"/>

    <rule ref="category/java/design.xml/CollapsibleIfStatements"/>
    <rule ref="category/java/design.xml/SimplifiedTernary"/>
    <rule ref="category/java/design.xml/UselessOverridingMethod"/>

    <rule ref="category/java/errorprone.xml/AvoidBranchingStatementAsLastInLoop"/>
    <rule ref="category/java/errorprone.xml/AvoidDecimalLiteralsInBigDecimalConstructor"/>
    <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/CheckSkipResult"/>
    <rule ref="category/java/errorprone.xml/ClassCastExceptionWithToArray"/>
    <rule ref="category/java/errorprone.xml/DontUseFloatTypeForLoopIndices"/>
    <rule ref="category/java/errorprone.xml/EmptyCatchBlock"/>
    <rule ref="category/java/errorprone.xml/JumbledIncrementer"/>
    <rule ref="category/java/errorprone.xml/MisplacedNullCheck"/>
    <rule ref="category/java/errorprone.xml/OverrideBothEqualsAndHashcode"/>
    <rule ref="category/java/errorprone.xml/ReturnFromFinallyBlock"/>
    <rule ref="category/java/errorprone.xml/UnconditionalIfStatement"/>
    <rule ref="category/java/errorprone.xml/UnnecessaryConversionTemporary"/>
    <rule ref="category/java/errorprone.xml/UnusedNullCheckInEquals"/>
    <rule ref="category/java/errorprone.xml/UselessOperationOnImmutable"/>

    <rule ref="category/java/multithreading.xml/AvoidThreadGroup"/>
    <rule ref="category/java/multithreading.xml/DontCallThreadRun"/>
    <rule ref="category/java/multithreading.xml/DoubleCheckedLocking"/>

    <rule ref="category/java/performance.xml/BigIntegerInstantiation"/>

</ruleset>