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Created October 1, 2020 02:09
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checkstyle for java project
<?xml version="1.0" encoding="UTF-8"?>
"-//Puppy Crawl//DTD Check Configuration 1.3//EN"
<!--Refer -->
<module name="Checker">
<property name="localeLanguage" value="en"/>
<!--To configure the check to report on the first instance in each file-->
<module name="FileTabCharacter"/>
<module name="RegexpSingleline">
<property name="format" value="^.*System\.(out|err).*$"/>
<property name="message" value="Don't use System.out/err, use SLF4J instead."/>
<module name="FileLength">
<property name="max" value="3000"/>
<module name="TreeWalker">
<property name="tabWidth" value="4"/>
<module name="CommentsIndentation"/>
<module name="SuppressionCommentFilter">
<property name="offCommentFormat" value="CS:OFF:BEGIN"/>
<property name="onCommentFormat" value="CS:OFF:END"/>
<property name="checkFormat" value=".*"/>
<module name="UnusedImports">
<property name="processJavadoc" value="true"/>
<module name="RedundantImport"/>
<!--Checks that classes that override equals() also override hashCode()-->
<module name="EqualsHashCode"/>
<!--Checks for over-complicated boolean expressions. Currently finds code like if (topic == true), topic || true, !false, etc.-->
<module name="SimplifyBooleanExpression"/>
<module name="OneStatementPerLine"/>
<module name="UnnecessaryParentheses"/>
<!--Checks for over-complicated boolean return statements. For example the following code-->
<module name="SimplifyBooleanReturn"/>
<!--Check that the default is after all the cases in producerGroup switch statement-->
<module name="DefaultComesLast"/>
<!--Detects empty statements (standalone ";" semicolon)-->
<module name="EmptyStatement"/>
<!--Checks that long constants are defined with an upper ell-->
<module name="UpperEll"/>
<module name="ConstantName">
<property name="format" value="(^[A-Z][A-Z0-9]*(_[A-Z0-9]+)*$)|(^logger)"/>
<!--Checks that local, non-final variable names conform to producerGroup format specified by the format property-->
<module name="LocalVariableName"/>
<!--Validates identifiers for local, final variables, including catch parameters-->
<module name="LocalFinalVariableName"/>
<!--Validates identifiers for non-static fields-->
<module name="MemberName"/>
<!--Validates identifiers for class type parameters-->
<module name="ClassTypeParameterName">
<property name="format" value="(^[A-Z][A-Z0-9]*(_[A-Z0-9]+)*$)"/>
<!--Validates identifiers for method type parameters-->
<module name="MethodTypeParameterName">
<property name="format" value="(^[A-Z][A-Z0-9]*(_[A-Z0-9]+)*$)"/>
<module name="PackageName">
<property name="format" value="^run\.halo(\.[a-zA-Z][a-zA-Z0-9]*)+$"/>
<module name="ParameterName"/>
<module name="StaticVariableName">
<property name="format" value="(^[A-Z][A-Z0-9]*(_[A-Z0-9]+)*$)"/>
<module name="TypeName">
<property name="format" value="(^[A-Z][a-zA-Z0-9]*$)|(^[A-Z][A-Z0-9]*(_[A-Z0-9]+)*$)"/>
<module name="GenericWhitespace"/>
<module name="NoWhitespaceBefore"/>
<module name="WhitespaceAfter"/>
<module name="WhitespaceAround">
<property name="allowEmptyConstructors" value="true"/>
<property name="allowEmptyMethods" value="true"/>
<!-- Indentation -->
<module name="Indentation">
<property name="forceStrictCondition" value="true"/>
<property name="throwsIndent" value="8"/>
<property name="lineWrappingIndentation" value="8"/>
<module name="MethodParamPad"/>
<module name="ParenPad"/>
<module name="TypecastParenPad"/>
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