--- old/src/java.desktop/share/classes/javax/sound/sampled/spi/AudioFileReader.java	2020-08-06 02:07:30.769004500 -0700
+++ new/src/java.desktop/share/classes/javax/sound/sampled/spi/AudioFileReader.java	2020-08-06 02:07:30.144256400 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 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
@@ -45,6 +45,11 @@
 public abstract class AudioFileReader {
 
     /**
+     * Constructs an {@code AudioFileReader}.
+     */
+    protected AudioFileReader() {}
+
+    /**
      * Obtains the audio file format of the input stream provided. The stream
      * must point to valid audio file data. In general, audio file readers may
      * need to read some data from the stream before determining whether they