checkstyle_checks.xml

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

<!-- Checkstyle configuration that checks the sun coding conventions from:
	- the Java Language Specification at http://java.sun.com/docs/books/jls/second_edition/html/index.html
	- the Sun Code Conventions at http://java.sun.com/docs/codeconv/ - the Javadoc
	guidelines at http://java.sun.com/j2se/javadoc/writingdoccomments/index.html
	- the JDK Api documentation http://java.sun.com/j2se/docs/api/index.html
	- some best practices Checkstyle is very configurable. Be sure to read the
	documentation at http://checkstyle.sf.net (or in your downloaded distribution).
	Most Checks are configurable, be sure to consult the documentation. To completely
	disable a check, just comment it out or delete it from the file. Finally,
	it is worth reading the documentation. -->

<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}"/> -->

	<property name="fileExtensions" value="java, properties, xml" />

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

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

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

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

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

	<!-- Miscellaneous other checks. -->
	<!-- See http://checkstyle.sf.net/config_misc.html -->
	<module name="RegexpSingleline">
		<property name="format" value="\s+$" />
		<property name="minimum" value="0" />
		<property name="maximum" value="0" />
		<property name="message" value="Line has trailing spaces." />
	</module>

	<!-- Checks for Headers -->
	<!-- See http://checkstyle.sf.net/config_header.html -->
	<!-- <module name="Header"> -->
	<!-- <property name="headerFile" value="${checkstyle.header.file}"/> -->
	<!-- <property name="fileExtensions" value="java"/> -->
	<!-- </module> -->

	<!-- Filter out Checkstyle warnings that have been suppressed with the @SuppressWarnings
		annotation -->
	<module name="SuppressWarningsFilter" />

	<!--module name="SuppressionFilter">
		<property name="file" value="${suppressionsFile}" />
		<property name="optional" value="false" />
	</module-->

	<module name="LineLength">
		<property name="max" value="140" />
	</module>

	<module name="TreeWalker">

		<!-- Simple console output is not allowed -->
		<!--module name="Regexp">
			<property name="format" value="System\.(out|err)"/>
			<property name="illegalPattern" value="true"/>
			<property name="ignoreComments" value="true"/>
		</module-->

		<!-- Make the @SuppressWarnings annotations available to Checkstyle -->
		<module name="SuppressWarningsHolder" />

		<!-- Checks for Javadoc comments. -->
		<!-- See http://checkstyle.sf.net/config_javadoc.html -->
		<!-- <module name="JavadocMethod"/> <module name="JavadocType"/> <module
			name="JavadocVariable"/> <module name="JavadocStyle"/> -->

		<!-- Checks for Naming Conventions. -->
		<!-- See http://checkstyle.sf.net/config_naming.html -->
		<module name="ConstantName" />
		<module name="LocalFinalVariableName" />
		<module name="LocalVariableName" />
		<module name="MemberName" />
		<module name="MethodName" />
		<module name="PackageName" />
		<module name="ParameterName" />
		<module name="StaticVariableName" />
		<module name="TypeName" />

		<!-- Checks for imports -->
		<!-- See http://checkstyle.sf.net/config_import.html -->
		<!-- module name="AvoidStarImport"/ -->
		<module name="IllegalImport" /> <!-- defaults to sun.* packages -->
		<module name="RedundantImport" />
		<module name="UnusedImports">
			<property name="processJavadoc" value="false" />
		</module>

		<!-- Checks for Size Violations. -->
		<!-- See http://checkstyle.sf.net/config_sizes.html -->
		<module name="MethodLength" />
		<!--  module name="ParameterNumber">
			<property name="max" value="10" />
		</module -->

		<!-- Checks for whitespace -->
		<!-- See http://checkstyle.sf.net/config_whitespace.html -->
		<module name="EmptyForIteratorPad" />
		<module name="GenericWhitespace" />
		<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 Checks -->
		<!-- See http://checkstyle.sf.net/config_modifiers.html -->
		<module name="ModifierOrder" />
		<module name="RedundantModifier" />

		<!-- Checks for blocks. You know, those {}'s -->
		<!-- See http://checkstyle.sf.net/config_blocks.html -->
		<!-- module name="AvoidNestedBlocks"/ -->
		<module name="EmptyBlock" />
		<module name="LeftCurly" />
		<module name="NeedBraces" />
		<module name="RightCurly" />

		<!-- Checks for common coding problems -->
		<!-- See http://checkstyle.sf.net/config_coding.html -->
		<!-- module name="AvoidInlineConditionals"/ -->
		<module name="EmptyStatement" />
		<module name="EqualsHashCode" />
		<module name="HiddenField">
			<property name="ignoreConstructorParameter" value="true" />
			<property name="ignoreSetter" value="true" />
		</module>
		<module name="IllegalInstantiation" />
		<module name="InnerAssignment" />
		<module name="MagicNumber" />
		<module name="MissingSwitchDefault" />
		<module name="SimplifyBooleanExpression" />
		<module name="SimplifyBooleanReturn" />

		<!-- Checks for class design -->
		<!-- See http://checkstyle.sf.net/config_design.html -->
		<!--module name="DesignForExtension"/ -->
		<module name="FinalClass" />
		<!-- module name="HideUtilityClassConstructor"/ -->
		<module name="InterfaceIsType" />
		<module name="VisibilityModifier" />

		<!-- Miscellaneous other checks. -->
		<!-- See http://checkstyle.sf.net/config_misc.html -->
		<module name="ArrayTypeStyle" />
		<!-- module name="FinalParameters"/ -->
		<module name="TodoComment" />
		<module name="UpperEll" />

	</module>

</module>