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">

	<!-- Check for new Line at EOF -->
	<module name="NewlineAtEndOfFile">
		<property name="lineSeparator" value="lf"/>
	</module>

	<!-- Allow ignoring things with @SuppressWarnings or comment -->
	<module name="SuppressWarningsFilter"/>

	<!--Check for trailing spaces -->
	<module name="RegexpSingleline">
		<property name="format" value="(^\t{0,} + (?![\*@]))|([ \t]+$)"/>
		<property name="minimum" value="0"/>
		<property name="maximum" value="0"/>
		<property name="message" value="Line should use tab indentation and have no trailing spaces."/>
	</module>

	<module name="TreeWalker">

		<module name="SuppressionCommentFilter" />

		<!-- Ignore if SuppressWarnings or comment -->
		<module name="SuppressWarningsHolder"/>

		<!-- Check if Methods, Classes, Interfaces and Enums have a Javadoc Comments -->
		<module name="JavadocMethod"/>
		<module name="JavadocType">
			<property name="scope" value="PRIVATE"/>
			<property name="tokens" value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF"/>
		</module>

		<!-- Check formatting of Javadoc comments -->
		<module name="JavadocStyle">
			<property name="checkEmptyJavadoc" value="true"/>
		</module>
		<module name="JavadocParagraph"/>
		<module name="AtclauseOrder">
			<property name="tagOrder"
					  value="@version, @param, @return, @throws, @exception, @see, @since, @serial, @serialField, @serialData, @deprecated"/>
			<property name="target" value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF, METHOD_DEF, CTOR_DEF, VARIABLE_DEF"/>
		</module>
		<module name="NonEmptyAtclauseDescription"/>

		<!-- Check imports -->
		<module name="UnusedImports"/>
		<module name="AvoidStarImport"/>
		<module name="RedundantImport"/>
		<module name="IllegalImport">
			<property name="illegalPkgs" value="java.awt, java.sql, javafx, sun"/>
		</module>

		<!-- Check declaration order of variables -->
		<module name="DeclarationOrder"/>

		<!-- Check if Constants are written in Capital Letters -->
		<module name="ConstantName"/>

		<!-- Check if Package Name is correct -->
		<module name="PackageName"/>

		<!-- Check if non static fields begin lower case -->
		<module name="MemberName"/>

		<!-- Check if method identifiers begin lower case -->
		<module name="MethodName"/>

		<!-- Check empty line separators -->
		<module name="EmptyLineSeparator">
			<property name="tokens"
					  value="IMPORT, CLASS_DEF, INTERFACE_DEF, ENUM_DEF, STATIC_INIT, INSTANCE_INIT, METHOD_DEF, CTOR_DEF"/>
		</module>

		<!-- Check default is at end of switch if there is one -->
		<module name="DefaultComesLast"/>

		<!-- Check if package declaration is correct -->
		<module name="PackageDeclaration"/>

		<!-- Check different whitespaces -->
		<module name="EmptyForIteratorPad"/>
		<module name="GenericWhitespace"/>
		<module name="MethodParamPad"/>
		<module name="ParenPad"/>
		<module name="WhitespaceAfter"/>
		<module name="WhitespaceAround"/>
		<module name="SingleSpaceSeparator"/>

		<!-- Check Blocks -->
		<module name="EmptyBlock"/>
		<module name="LeftCurly"/>
		<module name="RightCurly"/>

		<!-- Check Code -->
		<module name="EmptyStatement"/>
		<module name="EqualsHashCode"/>
		<module name="MissingSwitchDefault"/>
		<module name="IllegalThrows"/>
		<module name="IllegalCatch"/>
		<module name="SimplifyBooleanExpression"/>
		<module name="SimplifyBooleanReturn"/>
		<module name="OneStatementPerLine"/>
		<module name="ModifiedControlVariable"/>
		<module name="RequireThis"/>
		<module name="StringLiteralEquality"/>

		<!-- Check Misc -->
		<module name="ArrayTypeStyle"/>
	</module>
</module>