checkstyle.xml

<?xml version="1.0" encoding="utf-8" ?>

<!DOCTYPE module PUBLIC
        "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
        "https://checkstyle.org/dtds/configuration_1_3.dtd">

<module name="Checker">
    <module name="TreeWalker">
        <module name="ConstantName"/>

        <!-- Validate that first sentence is not empty and first sentence is not missing -->
        <module name="SummaryJavadocCheck"/>
        <module name="InvalidJavadocPosition"/>

        <module name="JavadocType">
            <property name="scope" value="package"/>
        </module>
        <module name="MissingJavadocType">
            <property name="scope" value="package"/>
        </module>

        <module name="JavadocMethod">
            <property name="accessModifiers" value="public, package"/>
            <property name="allowMissingParamTags" value="true"/>
            <property name="allowMissingReturnTag" value="true"/>
        </module>
        <module name="MissingJavadocMethod">
            <property name="scope" value="package"/>
            <property name="excludeScope" value="protected"/>
            <property name="allowMissingPropertyJavadoc" value="true"/>
        </module>

        <module name="AvoidStarImport"/>

        <module name="AvoidNestedBlocks"/>
        <module name="EmptyCatchBlock"/>
    </module>
</module>