Mac only displays "Default Audio Device" when querying mixers

Question

When I query all the mixers on my Macintosh (MacPro 13inch; 10.13.1), all that shows up is 6 iterations of "Default Audio Device, version Unknown Version".

I am simply wondering why this is, and how I might be able to fix it. If it matters, I am compiling the code through NetBeans 8.2

Here's the method:

public static void displayMixers() {
        Mixer.Info[] mixerInfo = AudioSystem.getMixerInfo(); //save info of all mixers on system to an array
        System.out.println("Available mixers: ");
        for (int i = 0; i < mixerInfo.length; i++) { //for loop that iterates over the array we just established
            System.out.println(mixerInfo[0].toString()); //print description of mixer each time
        }
    }

Answer 1

Your index into mixerInfo is [0] so you are just listing the first entry 6 times, Use [i]:

for (int i = 0; i < mixerInfo.length; i++) { 
  System.out.println(mixerInfo[i]); 
}

Note that you don't need the toString() call as println will do that for you.

Assuming you are using Java 5 or later it would be better to use the 'enhanced for loop' which removes the chance of using the wrong index:

for (Mixer.Info info : mixerInfo) {
  System.out.println(info);
}

On Java 8 or later you could even use a stream:

Arrays.stream(mixerInfo).forEachOrdered(System.out::println);