setRGB() in java

Question

I am using setRGB() for changing the values of the pixel of an image.

int rgb=new Color(0,0,0).getRGB();
image1.setRGB(i,j,rgb); //where i,j is the boundarie         


        

Answer 1

White is in RGB 255,255,255 so:

Color myWhite = new Color(255, 255, 255); // Color white
int rgb = myWhite.getRGB();

try {
    BufferedImage img = null;
    try {
        img = ImageIO.read(new File("bubbles.bmp"));
    }
    catch (IOException e) {
    }

    for (int i = 0; i < 100; i++) {
        for (int j = 0; j < 100; j++) {
            img.setRGB(i, j, rgb);
        }
    }

    // retrieve image
    File outputfile = new File("saved.png");
    ImageIO.write(img, "png", outputfile);
}
catch (IOException e) {
}

Answer 2

 Color col = new Color(newValue, newValue, newValue);
            image1.setRGB(i, j, col.getRGB());