java/etc/coding_standards.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE module PUBLIC "-//Puppy Crawl//DTD Check Configuration 1.1//EN" "http://www.puppycrawl.com/dtds/configuration_1_1.dtd">
<module name="Checker">
    <!-- Checks package.html defined for all packages. -->
    <module name="PackageHtml"/>

    <module name="TreeWalker">

        <!-- Whitespace conventions. -->
        <module name="TabCharacter"/>

        <!-- License conventions. Checks that the license is included in every file. -->
        <module name="Header">
            <property name="headerFile" value="${checkstyle.header.file}"/>
        </module>

        <!-- Coding style conventions. -->
        <module name="com.puppycrawl.tools.checkstyle.checks.coding.PackageDeclarationCheck">
            <property name="severity" value="error"/>
        </module>
        
        <!-- These rules ensure that everything is javadoc'ed. -->
        <!--
        <module name="RequiredRegexp">
            <property name="format" value="&lt;table id=&quot;crc&quot;&gt;&lt;caption&gt;CRC Card&lt;/caption&gt;"/>
        </module>
        -->

        <module name="com.puppycrawl.tools.checkstyle.checks.javadoc.JavadocTypeCheck">
            <property name="excludeScope" value="nothing"/>
            <property name="scope" value="private"/>
            <property name="severity" value="error"/>
            <property name="tokens" value="CLASS_DEF, INTERFACE_DEF"/>
            <property name="allowMissingParamTags" value="true"/>
        </module>
        
        <module name="com.puppycrawl.tools.checkstyle.checks.javadoc.JavadocVariableCheck">
            <property name="excludeScope" value="nothing"/>
            <property name="scope" value="private"/>
            <property name="severity" value="error"/>
        </module>
        
        <module name="com.puppycrawl.tools.checkstyle.checks.javadoc.JavadocMethodCheck">
            <property name="allowMissingParamTags" value="false"/>
            <property name="allowMissingReturnTag" value="false"/>
            <property name="allowMissingThrowsTags" value="false"/>
            <property name="allowThrowsTagsForSubclasses" value="false"/>
            <property name="allowUndeclaredRTE" value="true"/>
            <property name="allowMissingJavadoc" value="false"/>
            <property name="allowMissingPropertyJavadoc" value="true"/>
            <property name="excludeScope" value="nothing"/>
            <property name="scope" value="private"/>
            <property name="severity" value="error"/>
            <property name="tokens" value="METHOD_DEF, CTOR_DEF"/>
        </module>
        
        <module name="JavadocStyle">
            <property name="scope" value="private"/>
            <property name="checkHtml" value="false"/>
            <property name="checkFirstSentence" value="true"/>
            <property name="checkEmptyJavadoc" value="true"/>
        </module>
        
        <!-- These rules enforce the conventions for the naming of variables. -->        
        <!--
        <module name="com.puppycrawl.tools.checkstyle.checks.naming.ConstantNameCheck">
            <property name="format" value="^log$|^[A-Z](_?[A-Z0-9]+)*$"/>
            <property name="severity" value="error"/>
        </module>
        
        <module name="com.puppycrawl.tools.checkstyle.checks.naming.LocalFinalVariableNameCheck">
            <property name="format" value="^[a-z][a-zA-Z0-9_]*$"/>
            <property name="severity" value="error"/>
        </module>
        
        <module name="com.puppycrawl.tools.checkstyle.checks.naming.LocalVariableNameCheck">
            <property name="format" value="^[a-z][a-zA-Z0-9_]*$"/>
            <property name="severity" value="error"/>
        </module>
        
        <module name="com.puppycrawl.tools.checkstyle.checks.naming.MemberNameCheck">
            <property name="applyToPackage" value="true"/>
            <property name="applyToPrivate" value="true"/>
            <property name="applyToProtected" value="true"/>
            <property name="applyToPublic" value="true"/>
            <property name="format" value="^[a-z][a-zA-Z0-9_]*$"/>
            <property name="severity" value="error"/>
        </module>
        
        <module name="com.puppycrawl.tools.checkstyle.checks.naming.MethodNameCheck">
            <property name="format" value="^[a-z][a-zA-Z0-9_]*$"/>
            <property name="severity" value="error"/>
        </module>
        
        <module name="com.puppycrawl.tools.checkstyle.checks.naming.PackageNameCheck">
            <property name="format" value="^[a-z]+(\.[a-zA-Z_][a-zA-Z0-9_]*)*$"/>
            <property name="severity" value="error"/>
        </module>
        
        <module name="com.puppycrawl.tools.checkstyle.checks.naming.ParameterNameCheck">
            <property name="format" value="^[a-z][a-zA-Z0-9_]*$"/>
            <property name="severity" value="error"/>
        </module>
        
        <module name="com.puppycrawl.tools.checkstyle.checks.naming.StaticVariableNameCheck">
            <property name="format" value="^[a-z][a-zA-Z0-9_]*$"/>
            <property name="severity" value="error"/>
        </module>
        
        <module name="com.puppycrawl.tools.checkstyle.checks.naming.TypeNameCheck">
            <property name="format" value="^[A-Z][a-zA-Z0-9_]*$"/>
            <property name="severity" value="error"/>
            <property name="tokens" value="CLASS_DEF, INTERFACE_DEF"/>
        </module>
        -->
    </module>
</module>