config.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">
    <property name="charset" value="UTF-8"/>

    <!-- do not change severity to 'error', as that will hide errors caused by exceptions -->
    <property name="severity" value="warning"/>

    <!-- haltOnException is required for exception fixes and reporting of all exceptions -->
    <property name="haltOnException" value="false"/>

    <!-- BeforeExecutionFileFilters is required for sources of java9 -->
    <module name="BeforeExecutionExclusionFileFilter">
        <property name="fileNamePattern" value="module\-info\.java$" />
    </module>
    <module name="OrderedProperties"/>
    <property name="fileExtensions" value="properties"/>

    <!-- Example of filter -->
    <!--
    <module name="SeverityMatchFilter">
        <property name="severity" value="warning"/>
        <property name="acceptOnMatch" value="false"/>
    </module>
    -->
</module>