checkstyle.xml

<?xml version="1.0"?>
<!--

    IRClib - A Java Internet Relay Chat library
    Copyright (C) 2006-2015 Christoph Schwering <schwering@gmail.com>
    and/or other contributors as indicated by the @author tags.

    This library and the accompanying materials are made available under the
    terms of the
     - GNU Lesser General Public License,
     - Apache License, Version 2.0 and
     - Eclipse Public License v1.0.
    This library is distributed in the hope that it will be useful, but WITHOUT
    ANY WARRANTY.

-->
<!DOCTYPE module PUBLIC
    "-//Puppy Crawl//DTD Check Configuration 1.2//EN"
    "http://www.puppycrawl.com/dtds/configuration_1_2.dtd">

<module name="Checker">

  <module name="FileTabCharacter">
    <property name="eachLine" value="true" />
  </module>

  <module name="RegexpSingleline">
    <!-- \s matches whitespace character, $ matches end of line. -->
    <property name="format" value="\s+$" />
    <property name="message" value="Line has trailing spaces." />
  </module>

  <!-- Enforce UNIX line endings. -->
  <module name="RegexpMultiline">
    <property name="format" value="\r\n" />
    <property name="maximum" value="0" />
    <property name="message"
        value="Line ends with Windows-style \r\n characters. Please use UNIX-style \n end of lines." />
  </module>

  <module name="TreeWalker">

    <property name="cacheFile" value="${checkstyle.cache.file}" />

    <!-- Checks for imports -->
    <module name="AvoidStarImport">
      <property name="allowStaticMemberImports" value="true" />
    </module>
    <module name="RedundantImport" />

    <module name="UnusedImports">
      <property name="processJavadoc" value="true" />
    </module>

    <module name="IllegalImport">
      <property name="illegalPkgs" value="junit.framework" />
    </module>

    <!-- Modifier Checks -->
    <module name="ModifierOrder" />
    <module name="RedundantModifier" />

    <!-- Checks for blocks. You know, those {}'s -->
    <module name="LeftCurly">
      <property name="option" value="eol" />
      <property name="tokens"
        value="CLASS_DEF,CTOR_DEF,INTERFACE_DEF,METHOD_DEF,LITERAL_SWITCH,STATIC_INIT,INSTANCE_INIT" />
    </module>

    <!-- Checks for common coding problems -->
    <!-- Disabled until http://sourceforge.net/tracker/?func=detail&aid=2843447&group_id=29721&atid=397078
      is fixed -->
    <!--<module name="DoubleCheckedLocking"/> -->
    <module name="EmptyStatement" />
    <module name="EqualsHashCode" />
    <module name="IllegalInstantiation" />
    <module name="RedundantThrows">
      <property name="allowUnchecked" value="true" />
      <property name="suppressLoadErrors" value="true" />
    </module>

    <!-- Miscellaneous other checks. -->
    <module name="UpperEll" />
    <module name="PackageAnnotation" />
    <module name="CovariantEquals" />
    <module name="ArrayTypeStyle" />

    <module name="LineLength">
      <property name="max" value="120" />
    </module>

  </module>

</module>