src/java.base/share/classes/java/io/FileNotFoundException.java

*** 39,48 ****
--- 39,49 ----
   * @author  unascribed
   * @since   1.0
   */
  
  public class FileNotFoundException extends IOException {
+     @java.io.Serial
      private static final long serialVersionUID = -897856973823710492L;
  
      /**
       * Constructs a <code>FileNotFoundException</code> with
       * <code>null</code> as its error detail message.