checkstyle.xml

<?xml version="1.0"?>
<!DOCTYPE module PUBLIC
        "-//Puppy Crawl//DTD Check Configuration 1.3//EN"
        "http://www.puppycrawl.com/dtds/configuration_1_3.dtd">

<module name="Checker">
    <property name="charset" value="UTF-8"/>
    <property name="severity" value="warning"/>
    <property name="fileExtensions" value="java, properties, xml, html"/>

    <!-- Checks for whitespace                               -->
    <!-- See http://checkstyle.sf.net/config_whitespace.html -->
    <module name="FileTabCharacter">
        <property name="eachLine" value="true"/>
    </module>
    <module name="TreeWalker">

        <!-- Formatting -->
        <module name="LineLength">
            <property name="max" value="120"/>
            <property name="ignorePattern" value="^package.*|^import.*|a href|href|http://|https://|ftp://"/>
        </module>
        <module name="NoLineWrap"/>
        <module name="LeftCurly"/>
        <module name="RightCurly"/>
        <module name="Indentation">
            <property name="basicOffset" value="4"/>
            <property name="braceAdjustment" value="0"/>
            <property name="caseIndent" value="4"/>
            <property name="throwsIndent" value="4"/>
            <property name="lineWrappingIndentation" value="4"/>
            <property name="arrayInitIndent" value="4"/>
        </module>
        <module name="CommentsIndentation"/>

        <!-- Code Style -->
        <module name="AvoidStarImport"/>
        <module name="OneTopLevelClass"/>
        <module name="OuterTypeFilename"/>
        <module name="EmptyBlock">
            <property name="option" value="TEXT"/>
            <property name="tokens" value="LITERAL_TRY, LITERAL_FINALLY, LITERAL_IF, LITERAL_ELSE, LITERAL_SWITCH"/>
        </module>
        <module name="NeedBraces"/>
        <module name="WhitespaceAround"/>
        <module name="OneStatementPerLine"/>
        <module name="MultipleVariableDeclarations"/>
        <module name="DeclarationOrder"/>
        <module name="ArrayTypeStyle"/>
        <module name="MissingSwitchDefault"/>
        <module name="RedundantModifier"/>
        <module name="FallThrough"/>
        <module name="ModifierOrder"/>
        <module name="EqualsAvoidNull"/>
        <module name="IllegalThrows"/>
        <module name="ModifiedControlVariable"/>
        <module name="MultipleStringLiterals"/>
        <module name="SimplifyBooleanExpression"/>
        <module name="SimplifyBooleanReturn"/>

        <module name="RedundantModifier"/>
        <module name="EmptyLineSeparator">
            <property name="allowNoEmptyLineBetweenFields" value="true"/>
        </module>
        <module name="UnusedImports"/>
        <module name="OverloadMethodsDeclarationOrder"/>
        <module name="MethodParamPad"/>
        <module name="EmptyCatchBlock">
            <property name="exceptionVariableName" value="expected"/>
        </module>
        <module name="MissingDeprecated"/>
        <module name="MissingOverride"/>
        <module name="MagicNumber">
            <property name="ignoreNumbers" value="-1, 0, 1, 2, 3"/>
        </module>

        <!-- Naming -->
        <module name="PackageName"/>
        <module name="TypeName"/>
        <module name="MemberName"/>
        <module name="ParameterName"/>
        <module name="ConstantName"/>
        <module name="LocalFinalVariableName"/>
        <module name="ClassTypeParameterName"/>
        <module name="MethodTypeParameterName"/>
        <module name="InterfaceTypeParameterName"/>
        <module name="MethodName"/>
        <module name="LocalVariableName">
            <property name="allowOneCharVarInForLoop" value="true"/>
        </module>

        <!-- Javadoc -->
        <module name="JavadocMethod">
            <property name="scope" value="package"/>
            <property name="allowMissingParamTags" value="false"/>
            <property name="allowMissingThrowsTags" value="false"/>
            <property name="allowMissingReturnTag" value="false"/>
            <property name="minLineCount" value="2"/>
            <property name="allowedAnnotations" value="Override, Test"/>
            <property name="allowThrowsTagsForSubclasses" value="true"/>
        </module>
        <module name="JavadocType">
            <property name="scope" value="package"/>
        </module>
        <module name="JavadocVariable">
            <property name="scope" value="package"/>
        </module>
        <module name="JavadocParagraph"/>
        <module name="JavadocStyle"/>
        <module name="PackageAnnotation"/>
        <module name="AtclauseOrder">
            <property name="tagOrder" value="@param, @return, @throws, @deprecated"/>
            <property name="target" value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF, METHOD_DEF, CTOR_DEF, VARIABLE_DEF"/>
        </module>
        <module name="SingleLineJavadoc">
            <property name="ignoreInlineTags" value="false"/>
        </module>
    </module>

    <module name="JavadocPackage"/>
</module>