src/java.desktop/share/classes/javax/sound/sampled/spi/MixerProvider.java

*** 1,7 ****
  /*
!  * 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
--- 1,7 ----
  /*
!  * 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
*** 38,47 ****
--- 38,52 ----
   * @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