checkstyle.xml

<?xml version="1.0"?>
<!--
   Licensed to the Apache Software Foundation (ASF) under one or more
  contributor license agreements.  See the NOTICE file distributed with
  this work for additional information regarding copyright ownership.
  The ASF licenses this file to You under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with
  the License.  You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
-->
<!DOCTYPE module PUBLIC
      "-//Puppy Crawl//DTD Check Configuration 1.1//EN"
      "http://www.puppycrawl.com/dtds/configuration_1_1.dtd">
  
  <!--
    Checkstyle checks configured for Maven.
  -->
  
  <module name="Checker">
  
      <!-- Checks that a package.html file exists for each package.     -->
      <!-- See http://checkstyle.sf.net/config_javadoc.html#PackageHtml -->
      <module name="JavadocPackage">
          <!-- setting allowLegacy means it will check for package.html instead of just package-info.java -->
          <property name="allowLegacy" value="true"/>
      </module>
  
      <!-- 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"/>
  
      <module name="Header">
          <property name="headerFile" value="${checkstyle.header.file}"/>
      </module>

      <module name="FileLength"/>

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

      <module name="RegexpSingleline">
          <property name="format" value="\s+$"/>
          <property name="message" value="Line has trailing spaces."/>
      </module>

      <module name="TreeWalker">
  
          <property name="cacheFile" value="${checkstyle.cache.file}"/>
  
          <!-- ************************************************************** -->
          <!-- Checks that are different from the sun coding conventions ones -->
          <!-- ************************************************************** -->
          <property name="tabWidth" value="4"/>
          <module name="LeftCurly">
            <property name="option" value="eol"/>
          </module>
          <module name="RightCurly">
            <property name="option" value="same"/>
          </module>
          <module name="LineLength">
            <property name="max" value="132"/>
          </module>
          <module name="MethodLength">
            <property name="max" value="175"/>
          </module>
          <!-- No Paren pad check
          <module name="ParenPad"/>
          -->
          <module name="ConstantName">
            <property name="format" value="log|^[a-zA-Z][a-zA-Z0-9_]*$"/>
          </module>
          
          <!-- ************************************************************** -->
          <!-- Default Sun coding conventions checks                          -->
          <!-- ************************************************************** -->
  
          <!-- Checks for Javadoc comments.                     -->
          <!-- See http://checkstyle.sf.net/config_javadoc.html -->
          <module name="JavadocMethod">
              <property name="scope" value="protected"/>
              <property name="allowUndeclaredRTE" value="true"/>
          </module>
          <module name="JavadocType">
              <property name="scope" value="protected"/>
          </module>
          <module name="JavadocVariable">
              <property name="scope" value="protected"/>
          </module>
  
  
          <!-- Checks for Naming Conventions.                  -->
          <!-- See http://checkstyle.sf.net/config_naming.html -->
          <module name="LocalFinalVariableName"/>
          <module name="LocalVariableName"/>
          <module name="MethodName"/>
          <module name="PackageName"/>
          <module name="ParameterName"/>
          <module name="StaticVariableName"/>
          <module name="TypeName"/>
          <module name="MemberName"/>
  
          <!-- 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="ParameterNumber"/>
  
  
          <!-- Checks for whitespace                               -->
          <!-- See http://checkstyle.sf.net/config_whitespace.html -->
          <module name="EmptyForIteratorPad"/>
          <module name="NoWhitespaceAfter"/>
          <module name="NoWhitespaceBefore"/>
          <!-- module name="OperatorWrap"/ -->
          <module name="WhitespaceAfter">
             <property name="tokens" value="COMMA, SEMI"/>
          </module>
          <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">
             <property name="option" value="text"/>
          </module>
          
          <module name="NeedBraces"/>
  
  
          <!-- 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"/ -->
          <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>