package com.company;


import java.io.*;
import java.net.URL;
import java.nio.charset.Charset;
import java.util.ArrayList;

public class Main {

    public static void main(String[] args) throws IOException {

        ArrayList<String> arrayOfUrl = new ArrayList();
        int indexOfElementArray = 0;
        try (
                InputStream fileInput = new FileInputStream("empty.txt");
                InputStreamReader inputStreamRead = new InputStreamReader(fileInput, Charset.forName("UTF-8"));
                BufferedReader bufferRead = new BufferedReader(inputStreamRead);) {
            String url;
            while ((url = bufferRead.readLine()) != null) {
                arrayOfUrl.add(indexOfElementArray, url);
                indexOfElementArray++;
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

        while (indexOfElementArray > 0) {
            indexOfElementArray--;
            saveImage(arrayOfUrl.get(indexOfElementArray), indexOfElementArray + ".jpg");
        }

    }

    public static void saveImage(String imageUrl, String destinationFile) throws IOException {
        URL url = new URL(imageUrl);
        InputStream is = url.openStream();
        OutputStream os = new FileOutputStream(destinationFile);

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

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

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