checkstyle.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE module PUBLIC
    "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
    "https://checkstyle.org/dtds/configuration_1_3.dtd">

<module name="Checker">
    <property name="localeLanguage" value="en" />

    <module name="SuppressionFilter">
        <property name="file" value="suppressions.xml"/>
    </module>
    <module name="FileTabCharacter">
        <property name="eachLine" value="true"/>
        <property name="fileExtensions" value="java"/>
    </module>
    <module name="NewlineAtEndOfFile">
        <property name="severity" value="warning" />
        <property name="lineSeparator" value="lf" />
    </module>
    <module name="TreeWalker">
        <property name="tabWidth" value="1" />
        <module name="AvoidStarImport">
            <property name="severity" value="info" />
            <property name="allowClassImports" value="false" />
            <property name="allowStaticMemberImports" value="false" />
        </module>
        <module name="DefaultComesLast">
            <property name="severity" value="warning" />
        </module>
        <module name="EmptyStatement">
            <property name="severity" value="info" />
        </module>
        <module name="EqualsHashCode">
            <property name="severity" value="warning" />
        </module>
        <module name="FallThrough">
            <property name="severity" value="warning" />
        </module>
        <module name="FinalLocalVariable">
            <property name="severity" value="info" />
        </module>
        <module name="FinalParameters">
            <property name="severity" value="info" />
        </module>
        <module name="HideUtilityClassConstructor">
            <property name="severity" value="warning" />
        </module>
        <module name="IllegalThrows">
            <property name="severity" value="warning" />
        </module>
        <module name="InnerAssignment">
            <property name="severity" value="warning" />
        </module>
        <module name="LeftCurly">
            <property name="severity" value="info" />
            <property name="option" value="eol" />
        </module>
        <module name="LocalFinalVariableName">
            <property name="severity" value="warning" />
        </module>
        <module name="LocalVariableName">
            <property name="severity" value="warning" />
        </module>
        <module name="MemberName">
            <property name="severity" value="warning" />
        </module>
        <module name="MethodName">
            <property name="severity" value="warning" />
        </module>
        <module name="MissingOverride">
            <property name="severity" value="warning" />
        </module>
        <module name="ModifiedControlVariable">
            <property name="severity" value="warning" />
        </module>
        <module name="ModifierOrder">
            <property name="severity" value="warning" />
        </module>
        <module name="NeedBraces">
            <property name="severity" value="info" />
        </module>
        <module name="OuterTypeFilename">
            <property name="severity" value="info" />
        </module>
        <module name="PackageName">
            <property name="severity" value="warning" />
        </module>
        <module name="ParameterAssignment">
            <property name="severity" value="warning" />
        </module>
        <module name="ParameterName">
            <property name="severity" value="warning" />
        </module>
        <module name="ParenPad">
            <property name="severity" value="info" />
            <property name="option" value="nospace" />
        </module>
        <module name="RedundantImport">
            <property name="severity" value="info" />
        </module>
        <module name="RedundantModifier">
            <property name="severity" value="info" />
        </module>
        <module name="RightCurly">
            <property name="severity" value="info" />
            <property name="tokens" value="LITERAL_TRY, LITERAL_IF" />
            <property name="option" value="same" />
        </module>
        <module name="SimplifyBooleanExpression">
            <property name="severity" value="warning" />
        </module>
        <module name="SimplifyBooleanReturn">
            <property name="severity" value="warning" />
        </module>
        <module name="StaticVariableName">
            <property name="severity" value="warning" />
        </module>
        <module name="StringLiteralEquality">
            <property name="severity" value="warning" />
        </module>
        <module name="UnnecessaryParentheses">
            <property name="severity" value="info" />
        </module>
        <module name="UnusedImports">
            <property name="severity" value="warning" />
            <property name="processJavadoc" value="true" />
        </module>
        <module name="WhitespaceAfter">
            <property name="severity" value="info" />
        </module>
        <module name="WhitespaceAround">
            <property name="severity" value="info" />
        </module>
        <module name="ImportOrder">
            <property name="severity" value="info" />
            <property name="groups" value="android,androidx,com,java,javax,*" />
            <property name="ordered" value="true" />
            <property name="separated" value="true" />
            <property name="option" value="under" />
        </module>
    </module>
</module>