src/java.base/share/classes/sun/net/www/protocol/http/NegotiateAuthentication.java

*** 43,52 ****
--- 43,53 ----
   * @since 1.6
   */
  
  class NegotiateAuthentication extends AuthenticationInfo {
  
+     @java.io.Serial
      private static final long serialVersionUID = 100L;
      private static final PlatformLogger logger = HttpURLConnection.getHttpLogger();
  
      private final HttpCallerInfo hci;