src/java.desktop/share/classes/javax/sound/midi/spi/package-info.java

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 1999, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2018, 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

@@ -31,9 +31,15 @@
  * For more information on using Java Sound see:
  * <ul>
  *   <li><a href="https://docs.oracle.com/javase/tutorial/sound/">
  *   The Java Sound Tutorial</a>
  * </ul>
+ * Please note: In the {@code javax.sound.midi.spi} APIs, a {@code null}
+ * reference parameter to methods is incorrect unless explicitly documented on
+ * the method as having a meaningful interpretation. Usage to the contrary is
+ * incorrect coding and may result in a run time exception either immediately or
+ * at some later time. {@code NullPointerException} is an example of typical and
+ * acceptable run time exception for such cases.
  *
  * @since 1.3
  */
 package javax.sound.midi.spi;