--- old/src/java.desktop/share/classes/java/awt/image/BufferStrategy.java	2020-08-17 10:55:45.613555931 +0100
+++ new/src/java.desktop/share/classes/java/awt/image/BufferStrategy.java	2020-08-17 10:55:45.445552306 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2013, 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
@@ -135,6 +135,11 @@
 public abstract class BufferStrategy {
 
     /**
+     * Constructor for subclasses to call.
+     */
+    public BufferStrategy() {}
+
+    /**
      * Returns the {@code BufferCapabilities} for this
      * {@code BufferStrategy}.
      *