checkstyle.xml

<?xml version="1.0"?>
<!DOCTYPE module PUBLIC
    "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
    "https://checkstyle.org/dtds/configuration_1_3.dtd">

<!--
  Minimal Checkstyle config for the Ark Java SDK.

  Focuses on issues that actually break builds or cause confusion:
  unused imports, star-imports, and duplicate imports.  Formatting
  style is left to the codegen templates + editor settings.

  Excludes: examples/ (developer convenience code, not library surface).
-->
<module name="Checker">
  <property name="charset" value="UTF-8"/>
  <property name="severity" value="error"/>

  <module name="TreeWalker">
    <!-- Flag imports that are never referenced in the file. -->
    <module name="UnusedImports"/>

    <!-- Disallow wildcard imports (e.g. import java.util.*) in generated code.
         Hand-written service layer is excluded — star imports are entrenched there. -->
    <module name="AvoidStarImport">
      <property name="id" value="AvoidStarImport"/>
    </module>
    <module name="SuppressionXpathSingleFilter">
      <property name="checks" value="AvoidStarImport"/>
      <property name="files" value="[\\/](service|interceptor|utils)[\\/]"/>
    </module>

    <!-- Flag identical import statements. -->
    <module name="RedundantImport"/>
  </module>
</module>