/var/tmp $ javac BrokenFile.java


/var/tmp $ cat config.xml
<!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="FinalParameters"/>
  </module>
</module>

/var/tmp $ cat BrokenFile.java
final class OuterClass {

  record Record(String name) {
  }

  interface BrokenInterface {
    static void test(Object o) { // violation expected
    }

    private void test2(Object o) { // violation expected
      if (o instanceof String s) { // violation expected
        System.out.println("s");
      } else if (o instanceof Record(String name)) { // violation expected 
        System.out.println(name);
      }
    }
  }
}

/var/tmp $ RUN_LOCALE="-Duser.language=en -Duser.country=US"
/var/tmp $ java $RUN_LOCALE -jar checkstyle-10.26.1-all.jar -c config.xml BrokenFile.java
Starting audit...
Audit done.