Get image numbers

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;

public class getImage {

    public static void main (String args[]) throws IOException{
        String url = "http://dummyimage.com/600x400/000/fff&text=";
        String destination = "C:\\Users\\ruudi\\Desktop\\images\\num";

        for(int i = 0; i <= 1000000; i++){
            saveImage(url, destination, i);
            System.out.println("Done " + i);
        }
        System.out.println("COMPLETE");
    }

    public static void saveImage(String imageUrl, String destination, int iter) throws IOException {
        URL url = new URL(imageUrl + iter);
        InputStream is = url.openStream();
        OutputStream os = new FileOutputStream(destination + iter + ".png");

        byte[] b = new byte[2048];
        int length;

        while((length = is.read(b)) != -1){
            os.write(b, 0, length);
        }

        is.close();
        os.close();
    }

}