--- old/src/java.desktop/share/classes/javax/print/ServiceUIFactory.java	2020-08-17 10:55:48.469617255 +0100
+++ new/src/java.desktop/share/classes/javax/print/ServiceUIFactory.java	2020-08-17 10:55:48.301613665 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -57,6 +57,11 @@
 public abstract class ServiceUIFactory {
 
     /**
+     * Constructor for subclasses to call.
+     */
+    public ServiceUIFactory() {}
+
+    /**
      * Denotes a UI implemented as a Swing component. The value of the string is
      * the fully qualified classname : "javax.swing.JComponent".
      */