src/java.base/share/classes/java/net/HttpRetryException.java

*** 35,44 ****
--- 35,45 ----
   * @author  Michael McMahon
   * @since   1.5
   */
  public
  class HttpRetryException extends IOException {
+     @java.io.Serial
      private static final long serialVersionUID = -9186022286469111381L;
  
      private int responseCode;
      private String location;