src/java.base/share/classes/java/lang/ClassFormatError.java

*** 33,42 ****
--- 33,43 ----
   * @author  unascribed
   * @since   1.0
   */
  public
  class ClassFormatError extends LinkageError {
+     @java.io.Serial
      private static final long serialVersionUID = -8420114879011949195L;
  
      /**
       * Constructs a <code>ClassFormatError</code> with no detail message.
       */