src/java.desktop/share/classes/javax/sound/midi/spi/MidiFileWriter.java

@@ -1,7 +1,7 @@
 /*
- * 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
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this

@@ -41,10 +41,15 @@
  * @since 1.3
  */
 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.
      *
      * @return array of file types. If no file types are supported, an array of
      *         length 0 is returned.