/* 

Value      Description 
0x00000000 Black 
0x00FF0000 Bright Red 
0x0000FF00 Bright Green 
0x000000FF Bright Blue 
0x007F7F7F Gray 
0x00FFFF00 Bright Yellow 
0x00FF7F7F Red Pastel 
0x00FFFFFF White 

*/

import java.awt.image.BufferedImage;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
 
public class BufferedImageTest {

    static BufferedImage image = new BufferedImage(300, 300, BufferedImage.TYPE_INT_RGB);

    public static void draw_1() 
    {

            /* fill the rectangle (0,0) to (300,300) with color 0xFFFFFFFF */ 

	    for (int x = 0; x < 300; x++)
                for (int y = 0; y < 300; y++)
                    image.setRGB(x, y, 0xFFFFFFFF);
    }

    public static void draw_2() 
    {
 	    /*  set color of the diagonal from (0,0) to (299,299) to Green */  

            for (int x = 0; x < 300; x++)
                image.setRGB(x, x, 0xFF00FF00);
 
 	    /*  set color of the rectangle from (10,20) to (199,40) to Black */  

            for (int x = 10; x < 200; x++)
                for (int y = 20; y < 40; y++)
                image.setRGB(x, y, 0x00000000);

 	    /*  set color of the diagonal from (0,299) to (299,0) to Red */  

            for (int x = 299; x > 0; x--)
                image.setRGB(x, 299-x, 0x00FF0000);

    }

    public static void main(String[] args) {
        try {
            JFrame frame = new JFrame("Buffered Image - Set Pixel");

	    draw_1(); 
	    draw_2();
	    
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	    frame.add(new JLabel(new ImageIcon(image)));
            frame.pack();
            frame.setVisible(true);

        } catch (Exception e) {e.printStackTrace();}
    }       

}