src/java.base/share/classes/java/nio/file/FileSystemException.java

*** 35,44 ****
--- 35,45 ----
   */
  
  public class FileSystemException
      extends IOException
  {
+     @java.io.Serial
      static final long serialVersionUID = -3055425747967319812L;
  
      private final String file;
      private final String other;