src/java.base/share/classes/javax/net/ssl/SSLProtocolException.java

*** 34,43 ****
--- 34,44 ----
   * @author David Brownell
   */
  public
  class SSLProtocolException extends SSLException
  {
+     @java.io.Serial
      private static final long serialVersionUID = 5445067063799134928L;
  
      /**
       * Constructs an exception reporting an SSL protocol error
       * detected by an SSL subsystem.