public void replaceImageColor(String file, Color srcColor, Color targetColor) throws IOException{

        URL http;

        if(file.trim().startsWith("https")){

            http = new URL(file);

            HttpsURLConnection conn = (HttpsURLConnection) http.openConnection();

            conn.setRequestMethod("GET");

        }else if(file.trim().startsWith("http")){

            http = new URL(file);

            HttpURLConnection conn = (HttpURLConnection) http.openConnection();

            conn.setRequestMethod("GET");

        }else{

            http = new File(file).toURI().toURL();

        }

        BufferedImage bi = ImageIO.read(http.openStream());

        for (int i = 0; i < bi.getWidth(); i++) {

            for (int j = 0; j < bi.getHeight(); j++) {

                  System.out.println(bi.getRGB(i, j));

                  if(srcColor.getRGB()==bi.getRGB(i, j)){

                      System.out.println(i+","+j+"  from:"+srcColor.getRGB()+"to"+targetColor.getRGB());

                      bi.setRGB(i, j, targetColor.getRGB());

                  }

            }

        }

        Iterator<ImageWriter> it = ImageIO.getImageWritersByFormatName("png");

        ImageWriter writer = it.next();

        File f = new File("c://test02.png");

        ImageOutputStream ios = ImageIO.createImageOutputStream(f);

        writer.setOutput(ios);

        writer.write(bi);

        bi.flush();

        ios.flush();

        ios.close();

    }

    public void createImage(int width, int height) throws IOException{

        BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_4BYTE_ABGR);

        Graphics2D graphic = bi.createGraphics();

        graphic.setColor(new Color(0.2f,0.3f,0.4f,0.4f));

        graphic.fillRect(0, 0, width, height);

        for (int i = 0; i < width; i++) {

            for (int j = 0; j < height; j++) {

                  //result[i][j] = bi.getRGB(i, j) & 0xFFFFFF;

                  System.out.println(bi.getRGB(i, j));

                 // bi.setRGB(i, j, 0xFFFFFF);

            }

       }

        Iterator<ImageWriter> it = ImageIO.getImageWritersByFormatName("png");

        ImageWriter writer = it.next();

        File f = new File("c://test02.png");

        ImageOutputStream ios = ImageIO.createImageOutputStream(f);

        writer.setOutput(ios);

        writer.write(bi);

    }