From InputStream to byte array

Oh! And finally happen!
This is the code from converting(/writing/copying) an InputStream object into an array of byte:

InputStream is=urlc.getInputStream();
ByteArrayOutputStream outb = new ByteArrayOutputStream();
final int BUF_SIZE = 1 << 8; //1KiB buffer
byte[] buffer = new byte[BUF_SIZE];
int bytesRead = -1;
while((bytesRead = is.read(buffer)) > -1) {
outb.write(buffer, 0, bytesRead);
}
is.close();
byte[] imageBytes = outb.toByteArray();

And it works!