checkstyle.xml

<!DOCTYPE module PUBLIC "-//Puppy Crawl//DTD Check Configuration 1.3//EN" "http://checkstyle.sourceforge.net/dtds/configuration_1_3.dtd">

<module name="Checker">
  <property name="charset" value="UTF-8" />
  <property name="fileExtensions" value="java" />

  <!-- No tabs. -->
  <module name="FileTabCharacter">
    <property name="eachLine" value="true" />
  </module>

  <module name="TreeWalker">

    <!-- No unused imports. -->
    <module name="UnusedImports">
      <property name="processJavadoc" value="true" />
    </module>

  </module>

</module>