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

*** 1,7 ****
  /*
!  * Copyright (c) 1999, 2014, 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, 2015, 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
*** 23,32 ****
--- 23,34 ----
   * questions.
   */
  
  package javax.sound.sampled.spi;
  
+ import java.util.Objects;
+ 
  import javax.sound.sampled.Mixer;
  
  /**
   * A provider or factory for a particular mixer type. This mechanism allows the
   * implementation to determine how resources are managed in creation /
*** 47,59 ****
--- 49,63 ----
       *
       * @param  info an info object that describes the mixer for which support is
       *         queried
       * @return {@code true} if the specified mixer is supported, otherwise
       *         {@code false}
+      * @throws NullPointerException if {@code info} is {@code null}
       * @see #getMixerInfo()
       */
      public boolean isMixerSupported(Mixer.Info info) {
+         Objects.requireNonNull(info);
  
          Mixer.Info infos[] = getMixerInfo();
  
          for(int i=0; i<infos.length; i++){
              if( info.equals( infos[i] ) ) {
*** 83,93 ****
       * The full set of the mixer info objects that represent the mixers
       * supported by this {@code MixerProvider} may be obtained through the
       * {@code getMixerInfo} method. Use the {@code isMixerSupported} method to
       * test whether this {@code MixerProvider} supports a particular mixer.
       *
!      * @param  info an info object that describes the desired mixer
       * @return mixer instance
       * @throws IllegalArgumentException if the info object specified does not
       *         match the info object for a mixer supported by this MixerProvider
       * @see #getMixerInfo()
       * @see #isMixerSupported(Mixer.Info)
--- 87,98 ----
       * The full set of the mixer info objects that represent the mixers
       * supported by this {@code MixerProvider} may be obtained through the
       * {@code getMixerInfo} method. Use the {@code isMixerSupported} method to
       * test whether this {@code MixerProvider} supports a particular mixer.
       *
!      * @param  info an info object that describes the desired mixer,
!      *         or {@code null} for the system default mixer
       * @return mixer instance
       * @throws IllegalArgumentException if the info object specified does not
       *         match the info object for a mixer supported by this MixerProvider
       * @see #getMixerInfo()
       * @see #isMixerSupported(Mixer.Info)