checkstyle.xml

<?xml version="1.0"?>
<!DOCTYPE module PUBLIC
 "-//Puppy Crawl//DTD Check Configuration 1.2//EN"
 "http://www.puppycrawl.com/dtds/configuration_1_2.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}"/>
 -->

 <!-- 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>

 <module name="TreeWalker">

 <!-- 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 Headers -->
 <!-- See http://checkstyle.sf.net/config_header.html -->
 <!-- <module name="Header"> -->
 <!-- The follow property value demonstrates the ability -->
 <!-- to have access to ANT properties. In this case it uses -->
 <!-- the ${basedir} property to allow Checkstyle to be run -->
 <!-- from any directory within a project. See property -->
 <!-- expansion, -->
 <!-- http://checkstyle.sf.net/config.html#properties -->
 <!-- <property -->
 <!-- name="headerFile" -->
 <!-- value="${basedir}/java.header"/> -->
 <!-- </module> -->

 <!-- Following interprets the header file as regular expressions. -->
 <!-- <module name="RegexpHeader"/> -->


 <!-- 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"/>


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


 <!-- 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="DoubleCheckedLocking"/> <!-- MY FAVOURITE -->
 <module name="EmptyStatement"/>
 <module name="EqualsHashCode"/>
 <module name="HiddenField"/>
 <module name="IllegalInstantiation"/>
 <module name="InnerAssignment"/>
 <module name="MagicNumber"/>
 <module name="MissingSwitchDefault"/>
 <module name="RedundantThrows"/>
 <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>