--- old/src/java.desktop/share/classes/javax/sound/midi/VoiceStatus.java	2020-08-06 02:07:14.049888700 -0700
+++ new/src/java.desktop/share/classes/javax/sound/midi/VoiceStatus.java	2020-08-06 02:07:13.454768300 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 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
@@ -142,4 +142,9 @@
      * @see #active
      */
     public int volume = 0;
+
+    /**
+     * Constructs a {@code VoiceStatus}.
+     */
+    public VoiceStatus() {}
 }
--- old/src/java.desktop/share/classes/javax/sound/midi/spi/MidiDeviceProvider.java	2020-08-06 02:07:17.444148500 -0700
+++ new/src/java.desktop/share/classes/javax/sound/midi/spi/MidiDeviceProvider.java	2020-08-06 02:07:16.846338300 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2018, 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
@@ -39,6 +39,11 @@
 public abstract class MidiDeviceProvider {
 
     /**
+     * Constructs a {@code MidiDeviceProvider}.
+     */
+    protected MidiDeviceProvider() {}
+
+    /**
      * Indicates whether the device provider supports the device represented by
      * the specified device info object.
      *
--- old/src/java.desktop/share/classes/javax/sound/midi/spi/MidiFileReader.java	2020-08-06 02:07:20.767317900 -0700
+++ new/src/java.desktop/share/classes/javax/sound/midi/spi/MidiFileReader.java	2020-08-06 02:07:20.160182100 -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
@@ -46,6 +46,11 @@
 public abstract class MidiFileReader {
 
     /**
+     * Constructs a {@code MidiFileReader}.
+     */
+    protected MidiFileReader() {}
+
+    /**
      * Obtains the MIDI file format of the input stream provided. The stream
      * must point to valid MIDI file data. In general, MIDI file readers may
      * need to read some data from the stream before determining whether they
--- old/src/java.desktop/share/classes/javax/sound/midi/spi/MidiFileWriter.java	2020-08-06 02:07:24.127072100 -0700
+++ new/src/java.desktop/share/classes/javax/sound/midi/spi/MidiFileWriter.java	2020-08-06 02:07:23.527937500 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2018, 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
@@ -43,6 +43,11 @@
 public abstract class MidiFileWriter {
 
     /**
+     * Constructs a {@code MidiFileWriter}.
+     */
+    protected MidiFileWriter() {}
+
+    /**
      * Obtains the set of MIDI file types for which file writing support is
      * provided by this file writer.
      *
--- old/src/java.desktop/share/classes/javax/sound/midi/spi/SoundbankReader.java	2020-08-06 02:07:27.425832900 -0700
+++ new/src/java.desktop/share/classes/javax/sound/midi/spi/SoundbankReader.java	2020-08-06 02:07:26.835712700 -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 SoundbankReader {
 
     /**
+     * Constructs a {@code SoundbankReader}.
+     */
+    protected SoundbankReader() {}
+
+    /**
      * Obtains a soundbank object from the {@code URL} provided.
      *
      * @param  url {@code URL} representing the soundbank
--- 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
--- old/src/java.desktop/share/classes/javax/sound/sampled/spi/AudioFileWriter.java	2020-08-06 02:07:34.163535900 -0700
+++ new/src/java.desktop/share/classes/javax/sound/sampled/spi/AudioFileWriter.java	2020-08-06 02:07:33.564401500 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2018, 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
@@ -46,6 +46,11 @@
 public abstract class AudioFileWriter {
 
     /**
+     * Constructs an {@code AudioFileWriter}.
+     */
+    protected AudioFileWriter() {}
+
+    /**
      * Obtains the file types for which file writing support is provided by this
      * audio file writer.
      *
--- old/src/java.desktop/share/classes/javax/sound/sampled/spi/FormatConversionProvider.java	2020-08-06 02:07:37.565123800 -0700
+++ new/src/java.desktop/share/classes/javax/sound/sampled/spi/FormatConversionProvider.java	2020-08-06 02:07:36.935982600 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2018, 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
@@ -52,6 +52,11 @@
 public abstract class FormatConversionProvider {
 
     /**
+     * Constructs a {@code FormatConversionProvider}.
+     */
+    protected FormatConversionProvider() {}
+
+    /**
      * Obtains the set of source format encodings from which format conversion
      * services are provided by this provider.
      *
--- old/src/java.desktop/share/classes/javax/sound/sampled/spi/MixerProvider.java	2020-08-06 02:07:40.900872100 -0700
+++ new/src/java.desktop/share/classes/javax/sound/sampled/spi/MixerProvider.java	2020-08-06 02:07:40.312740500 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2018, 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
@@ -40,6 +40,11 @@
 public abstract class MixerProvider {
 
     /**
+     * Constructs a {@code MixerProvider}.
+     */
+    protected MixerProvider() {}
+
+    /**
      * Indicates whether the mixer provider supports the mixer represented by
      * the specified mixer info object.
      * <p>