checkstyle.xml

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

<!--
      Checkstyle configuration based on the Google coding conventions from:

      -  Google
Java Style
         https://google.github.io/styleguide/javaguide.html

  -->

<module name="Checker">
  <module name="SuppressWarningsFilter" />
  <module name="NewlineAtEndOfFile" />
  <module name="FileLength">
    <property name="max" value="3000" />
  </module>
  <module name="FileTabCharacter" />

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

  <!-- Space after 'for' and 'if' -->
  <module name="RegexpSingleline">
    <property name="format" value="^\s*(for|if)\b[^ ]" />
    <property name="message" value="Space needed before opening parenthesis." />
  </module>

  <!-- For each spacing -->
  <module name="RegexpSingleline">
    <property name="format" value="^\s*for \(.*?([^ ]:|:[^ ])" />
    <property name="message" value="Space needed around ':' character." />
  </module>

  <module name="LineLength">
    <property name="max" value="300" />
  </module>

  <module name="TreeWalker">

    <module name="SuppressWarningsHolder" />

    <!-- Checks for Javadoc comments.                     -->
    <!-- See http://checkstyle.sf.net/config_javadoc.html -->
    <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="ParameterName" />
    <module name="StaticVariableName" />
    <module name="TypeName" />
    <module name="PackageName">
      <property name="format" value="^[a-z]+(\.[a-z][a-z0-9_]*)*$" />
      <message key="name.invalidPattern"
        value="Package name ''{0}'' must match pattern ''{1}''." />
    </module>

    <!-- Checks for imports                              -->
    <!-- See http://checkstyle.sf.net/config_import.html -->
    <module name="AvoidStarImport">
      <property name="excludes" value="com.ibm.cloud.platform_services.iam_identity.v1.model"/>
    </module>
    <module name="IllegalImport" />
    <!-- defaults to sun.* packages -->
    <module name="RedundantImport" />
    <module name="UnusedImports">
      <property name="processJavadoc" value="true" />
    </module>


    <!-- Checks for Size Violations.                    -->
    <!-- See http://checkstyle.sf.net/config_sizes.html -->
    <module name="MethodLength">
      <property name="max" value="2000" />
    </module>


    <!-- Checks for whitespace                               -->
    <!-- See http://checkstyle.sf.net/config_whitespace.html -->
    <module name="GenericWhitespace" />
    <module name="MethodParamPad" />
    <module name="OperatorWrap" />
    <module name="ParenPad" />
    <module name="TypecastParenPad" />
    <module name="WhitespaceAfter" />
    <module name="WhitespaceAround">
      <property name="tokens"
        value="ASSIGN, BAND, BAND_ASSIGN, BOR, BOR_ASSIGN, BSR, BSR_ASSIGN, BXOR, BXOR_ASSIGN,
          COLON, DIV, DIV_ASSIGN, DO_WHILE, EQUAL, GE, GT, LAND, LCURLY, LE, LITERAL_CATCH,
          LITERAL_DO, LITERAL_ELSE, LITERAL_FINALLY, LITERAL_FOR, LITERAL_IF, LITERAL_RETURN,
          LITERAL_SWITCH, LITERAL_SYNCHRONIZED, LITERAL_TRY, LITERAL_WHILE, LOR, LT, MINUS,
          MINUS_ASSIGN, MOD, MOD_ASSIGN, NOT_EQUAL, PLUS, PLUS_ASSIGN, QUESTION, SL, SLIST,
          SL_ASSIGN, SR, SR_ASSIGN, STAR, STAR_ASSIGN, LITERAL_ASSERT, TYPE_EXTENSION_AND" />
    </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="LeftCurly" />
    <module name="RightCurly" />


    <!-- Checks for common coding problems               -->
    <!-- See http://checkstyle.sf.net/config_coding.html -->
    <module name="CovariantEquals" />
    <module name="EmptyStatement" />
    <module name="EqualsHashCode" />
    <module name="IllegalInstantiation" />
    <module name="SimplifyBooleanExpression" />
    <module name="SimplifyBooleanReturn" />

    <!-- Checks for class design                         -->
    <!-- See http://checkstyle.sf.net/config_design.html -->
    <module name="HideUtilityClassConstructor" />

    <!-- Miscellaneous other checks.                   -->
    <!-- See http://checkstyle.sf.net/config_misc.html -->
    <module name="ArrayTypeStyle" />
    <module name="UpperEll" />
  </module>
</module>