create an ArrayList of bytes

Question

I want to read bytes from a wave file into an array. Since the number of bytes read depends upon the size of the wave file, I\'m creating a byte array with a maximum size of

Answer 1

You can have an array of byte like:

List arrays = new ArrayList();

To convert it back to arrays

Byte[] soundBytes = arrays.toArray(new Byte[arrays.size()]);

(Then, you will have to write a converter to transform Byte[] to byte[]).

EDIT: You are using List wrong, I'll just show you how to read AudioInputStream simply with ByteArrayOutputStream.

AudioInputStream ais = ....;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
int read;

while((read = ais.read()) != -1) {
    baos.write(read);
}

byte[] soundBytes = baos.toByteArray();

PS An IOException is thrown if frameSize is not equal to 1. Hence use a byte buffer to read data, like so:

AudioInputStream ais = ....;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int bytesRead = 0;

while((bytesRead = ais.read(buffer)) != -1) {
    baos.write(buffer, 0, bytesRead);
}

byte[] soundBytes = baos.toByteArray();