Smack/config/checkstyle.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE module PUBLIC
    "-//Puppy Crawl//DTD Check Configuration 1.3//EN"
     "http://www.puppycrawl.com/dtds/configuration_1_3.dtd">
<module name="Checker">
	<module name="SuppressionFilter">
		<property name="file" value="config/suppressions.xml"/>
	</module>
	<module name="Header">
		<property name="headerFile" value="config/header.txt"/>
		<property name="ignoreLines" value="3"/>
		<property name="fileExtensions" value="java"/>
	</module>
	<module name="NewlineAtEndOfFile">
		<property name="lineSeparator" value="lf"/>
	</module>
	<module name="RegexpSingleline">
		<property name="format" value="MXParser"/>
		<property name="message" value="Must not use MXParser, use XmlPullParserFactory instead"/>
	</module>
	<module name="RegexpSingleline">
		<property name="format" value="^\s+$"/>
		<property name="message" value="Line containing only whitespace character(s)"/>
	</module>
	<module name="TreeWalker">
		<module name="UnusedImports">
			<property name="processJavadoc" value="true"/>
		</module>
		<module name="AvoidStarImport"/>
		<module name="IllegalImport"/>
		<module name="RedundantImport"/>
		<module name="UpperEll"/>
		<module name="ArrayTypeStyle"/>
		<module name="GenericWhitespace"/>
		<module name="EmptyStatement"/>
		<module name="PackageDeclaration"/>
	</module>
</module>