src/java.base/share/classes/sun/reflect/annotation/ExceptionProxy.java

*** 35,42 ****
--- 35,43 ----
   *
   * @author  Josh Bloch
   * @since   1.5
   */
  public abstract class ExceptionProxy implements java.io.Serializable {
+     @java.io.Serial
      private static final long serialVersionUID = 7241930048386631401L;
      protected abstract RuntimeException generateException();
  }