checkstyle.xml

<?xml version="1.0"?>
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this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
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     http://www.apache.org/licenses/LICENSE-2.0

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-->

<!DOCTYPE module PUBLIC
    "-//Puppy Crawl//DTD Check Configuration 1.1//EN"
    "http://www.puppycrawl.com/dtds/configuration_1_1.dtd">

<!-- Commons Net customization of default Checkstyle behavior -->
<module name="Checker">

  <property name="localeLanguage" value="en"/>
  <module name="JavadocPackage">
    <!-- setting allowLegacy means it will check for package.html instead of just package-info.java -->
    <property name="allowLegacy" value="true"/>
  </module>

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

  <!-- Checks for white space at the end of the line -->
  <!-- See http://checkstyle.sourceforge.net/config_regexp.html -->
  <module name="RegexpSingleline">
    <property name="format" value="\s+$" />
    <property name="message" value="Line has trailing spaces." />
    <property name="fileExtensions" value="java" />
  </module>

  <!-- @author tags are deprecated -->
  <module name="RegexpSingleline">
    <property name="format" value="^\s+\*\s+@author\s" />
    <property name="message" value="Deprecated @author tag" />
    <property name="fileExtensions" value="java" />
  </module>

  <module name="TreeWalker">
    <property name="cacheFile" value="target/cachefile"/>
    <module name="AvoidStarImport">
      <property name="excludes" value="org.junit.Assert"/>
    </module>
    <module name="RedundantImport"/>
    <module name="UnusedImports"/>
    <module name="NeedBraces"/>
    <module name="LineLength">
      <property name="max" value="132"/>
    </module>

    <!-- 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="EmptyCatchBlock"></module>

    <module name="JavadocMethod">
      <property name="scope" value="public"/>
      <property name="allowUndeclaredRTE" value="true"/>
      <property name="allowMissingJavadoc" value="true"/>
      <property name="allowMissingParamTags" value="true"/>
      <property name="allowMissingThrowsTags" value="true"/>
    </module>

  </module>

  <module name="SuppressionCommentFilter"/>

  <module name="SuppressionFilter">
    <!-- config_loc is used by Eclipse plugin -->
    <property name="file" value="${config_loc}/checkstyle-suppressions.xml"/>
  </module>

  <!--
      Allow comment to suppress checkstyle for a single line
      e.g. // CHECKSTYLE IGNORE MagicNumber
   -->
  <module name="SuppressWithNearbyCommentFilter">
    <property name="commentFormat" value="CHECKSTYLE IGNORE (\w+)"/>
    <property name="checkFormat" value="$1"/>
  </module>

</module>