package org.checkstyle.suppressionxpathfilter.unnecessarynullcheckwithinstanceof;
   
   public class InputXpathUnnecessaryNullCheckWithInstanceOfAnonymous {
       private final Runnable runnable = new Runnable() {
           @Override
           public void run() {
               Object obj = "test";
               if (obj != null && obj instanceof String) { // warn
                   String s = (String) obj;
              }
          }
      };
  }