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src/java.desktop/share/classes/javax/sound/sampled/spi/MixerProvider.java
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@@ -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
@@ -38,10 +38,15 @@
* @since 1.3
*/
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>
* The full set of mixer info objects that represent the mixers supported by
* this {@code MixerProvider} may be obtained through the
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