checkstyle.xml

<?xml version="1.0"?>
<!DOCTYPE module PUBLIC "-//Puppy Crawl//DTD Check Configuration 1.3//EN" "http://www.puppycrawl.com/dtds/configuration_1_3.dtd">

<module name="Checker">
  <module name="NewlineAtEndOfFile"/>

  <module name="FileLength">
    <property name="max" value="2000"/>
  </module>

  <module name="TreeWalker">
    <module name="AvoidStarImport">
      <property name="excludes" value="java.io,java.net,java.lang.Math"/>
      <property name="allowClassImports" value="false"/>
      <property name="allowStaticMemberImports" value="true"/>
    </module>
    <module name="IllegalImport"/>
    <module name="RedundantImport"/>
    <module name="UnusedImports" />

    <module name="LocalFinalVariableName" />
    <module name="LocalVariableName" />
    <module name="PackageName">
      <property name="format" value="^[a-z]+(\.[a-z][a-z0-9]*)*$" />
    </module>
    <module name="StaticVariableName" />
    <module name="TypeName">
      <property name="severity" value="warning"/>
    </module>
    <module name="MemberName" />
    <module name="MethodName" />
    <module name="ParameterName " />
    <module name="ConstantName" />

    <module name="ArrayTypeStyle"/>
    <module name="UpperEll"/>

    <module name="LineLength">
      <property name="max" value="200" />
    </module>
    <module name="MethodLength">
      <property name="tokens" value="METHOD_DEF" />
      <property name="max" value="50" />
    </module>
    <module name="ParameterNumber">
      <property name="max" value="7" />
      <property name="ignoreOverriddenMethods" value="true"/>
      <property name="tokens" value="METHOD_DEF" />
    </module>

    <module name="MethodParamPad" />
    <module name="TypecastParenPad" />
    <module name="NoWhitespaceAfter"/>
    <module name="NoWhitespaceBefore"/>
    <module name="OperatorWrap"/>
    <module name="ParenPad"/>
    <module name="WhitespaceAfter"/>
    <module name="WhitespaceAround"/>

    <module name="ModifierOrder"/>
    <module name="RedundantModifier"/>

    <module name="AvoidNestedBlocks"/>
    <module name="EmptyBlock"/>
    <module name="LeftCurly"/>
    <module name="NeedBraces"/>
    <module name="RightCurly"/>

    <module name="EmptyStatement"/>
    <module name="EqualsHashCode"/>
    <module name="HiddenField">
      <property name="tokens" value="VARIABLE_DEF"/>
    </module>
    <module name="IllegalInstantiation"/>
    <module name="InnerAssignment"/>
    <module name="MissingSwitchDefault"/>
    <module name="SimplifyBooleanExpression"/>
    <module name="SimplifyBooleanReturn"/>
  </module>
</module>