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">

<!-- Checkstyle is very configurable. Be sure to read the documentation at http://checkstyle.sf.net (or in your downloaded distribution).-->
<module name="Checker">
	<!--
			If you set the basedir property below, then all reported file
			names will be relative to the specified directory. See
			http://checkstyle.sourceforge.net/5.x/config.html#Checker

			<property name="basedir" value="${basedir}"/>
		-->

	<!-- Checks that a package-info.java file exists for each package.   -->
	<!-- See http://checkstyle.sourceforge.net/config_javadoc.html#JavadocPackage -->
	<!--<module name="JavadocPackage"/>-->

	<!-- Checks whether files end with a new line.                        -->
	<!-- See http://checkstyle.sourceforge.net/config_misc.html#NewlineAtEndOfFile -->
	<!--<module name="NewlineAtEndOfFile"/>-->

	<!-- Checks that property files contain the same keys.         -->
	<!-- See http://checkstyle.sourceforge.net/config_misc.html#Translation -->
	<!--<module name="Translation"/>-->

	<!-- Checks for Size Violations.                    -->
	<!-- See http://checkstyle.sourceforge.net/config_sizes.html -->
	<module name="FileLength"/>

	<!-- Checks for whitespace                               -->
	<!-- See http://checkstyle.sourceforge.net/config_whitespace.html -->
	<!--<module name="FileTabCharacter"/>-->

	<!-- Miscellaneous other checks.                   -->
	<!-- See http://checkstyle.sourceforge.net/config_regexp.html -->
	<module name="RegexpSingleline">
		<property name="format" value="\s+$"/>
		<property name="message" value="Line has trailing spaces."/>
	</module>
	<module name="RegexpMultiline">
		<property name="format" value="System\s*\.(err|out)\s*\.print"/>
		<property name="message" value="Illegal usage of System.out.println() - use logger instead"/>
	</module>
	<module name="RegexpMultiline">
		<property name="format" value="\\u0[01](\d[a-f]|[a-f]\d)"/>
		<property name="fileExtensions" value="properties"/>
		<property name="message" value="Unicode is specified with lowercase (a-f) - use uppercase (A-F) e.g. \u00F3"/>
	</module>
	<module name="SuppressWithNearbyCommentFilter">
		<property name="checkFormat" value="$1"/>
		<property name="influenceFormat" value="1"/>
	</module>

	<module name="TreeWalker">
		<property name="tabWidth" value="4"/>

		<!-- 									JAVADOC. See http://checkstyle.sourceforge.net/config_javadoc.html -->
		<!--<module name="JavadocType"/>-->
		<!--<module name="JavadocMethod"/>-->
		<!--<module name="JavadocVariable"/>-->
		<!--<module name="JavadocStyle"/>-->

		<!-- 									NAMING CONVENTIONS. See http://checkstyle.sourceforge.net/config_naming.html -->
		<module name="LocalFinalVariableName"/>
		<module name="LocalVariableName"/>
		<module name="PackageName"/>
		<module name="ParameterName"/>
		<module name="StaticVariableName"/>
		<module name="TypeName"/>
		<!--<module name="ConstantName"/>-->
		<!--<module name="MemberName"/>-->
		<!--<module name="MethodName"/>-->

		<!-- 									HEADERS. See http://checkstyle.sourceforge.net/config_header.html   -->
		<!-- <module name="Header">                            -->
		<!-- <property                                              -->
		<!--     name="headerFile"                                  -->
		<!--     value="${basedir}/java.header"/>                   -->
		<!-- </module> -->
		<!-- <module name="RegexpHeader"/>                                -->

		<!-- 									IMPORTS. See http://checkstyle.sourceforge.net/config_imports.html -->
		<module name="AvoidStarImport"/>
		<module name="IllegalImport"/>
		<module name="RedundantImport"/>
		<module name="UnusedImports"/>
		<module name="ImportOrder">
			<property name="separated" value="true"/>
			<property name="option" value="top"/>
		</module>

		<!-- 									SIZE VIOLATIONS. http://checkstyle.sourceforge.net/config_sizes.html -->
		<module name="LineLength">
			<property name="max" value="160"/>
		</module>
		<module name="MethodLength"/>
		<module name="ParameterNumber">
			<property name="max" value="6"/>
		</module>

		<!-- 									WHITESPACES. See http://checkstyle.sourceforge.net/config_whitespace.html -->
		<module name="GenericWhitespace"/>
		<module name="RegexpSinglelineJava">
			<property name="format" value="^\t* +\t*\S"/>
			<property name="message" value="Line has leading space characters; indentation should be performed with tabs only."/>
			<property name="ignoreComments" value="true"/>
		</module>
		<!--<module name="EmptyForIteratorPad"/>-->
		<!--<module name="MethodParamPad"/>-->
		<!--<module name="NoWhitespaceAfter"/>-->
		<!--<module name="NoWhitespaceBefore"/>-->
		<!--<module name="OperatorWrap"/>-->
		<!--<module name="ParenPad"/>-->
		<!--<module name="TypecastParenPad"/>-->
		<!--<module name="WhitespaceAfter"/>-->
		<!--<module name="WhitespaceAround"/>-->

		<!-- 									MODIFIER See http://checkstyle.sourceforge.net/config_modifier.html -->
		<module name="ModifierOrder"/>
		<module name="RedundantModifier"/>

		<!-- 									BLOCKS. See http://checkstyle.sourceforge.net/config_blocks.html -->
		<module name="EmptyBlock"/>
		<module name="NeedBraces"/>
		<!--<module name="AvoidNestedBlocks"/>-->
		<!--<module name="LeftCurly"/>-->
		<!--<module name="RightCurly"/>-->

		<!-- 									CODING. See http://checkstyle.sourceforge.net/config_coding.html -->
		<module name="EmptyStatement"/>
		<module name="MissingSwitchDefault"/>
		<module name="SimplifyBooleanExpression"/>
		<module name="SimplifyBooleanReturn"/>
		<!--<module name="AvoidInlineConditionals"/>-->
		<!--<module name="DoubleCheckedLocking"/>-->
		<!--<module name="EqualsHashCode"/>-->
		<!--<module name="HiddenField"/>-->
		<!--<module name="IllegalInstantiation"/>-->
		<!--<module name="InnerAssignment"/>-->
		<!--<module name="MagicNumber"/>-->
		<!--<module name="RedundantThrows"/>-->

		<!-- 									DESIGN. See http://checkstyle.sourceforge.net/config_design.html -->
		<!--<module name="DesignForExtension"/>-->
		<!--<module name="FinalClass"/>-->
		<!--<module name="HideUtilityClassConstructor"/>-->

		<!--<module name="InterfaceIsType"/>-->
		<!--<module name="VisibilityModifier"/>-->

		<!-- 									MISCELLANEOUS. See http://checkstyle.sourceforge.net/config_misc.html -->
		<module name="UpperEll"/>
		<!--<module name="ArrayTypeStyle"/>-->
		<!--<module name="FinalParameters"/>-->
		<!--<module name="TodoComment"/>-->
		<module name="FileContentsHolder"/>
	</module>

</module>