import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.MemoryImageSource;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class MainClass extends JPanel {
public void paint(Graphics gg) {
int h = 150;
int w = 150;
int pixels[] = new int[w * h];
int i = 0;
int r = 0, g=0, b=0;
for (int y = 0; y < h; y++) {
for (int x = 0; x < h; x++) {
r = (x ^ y) & 0xff;
g = (x * 2 ^ y * 2) & 0xff;
b = (x * 4 ^ y * 4) & 0xff;
pixels[i++] = (255 << 24) | (r << 16) | (g << 8) | b;
}
}
Image art = createImage(new MemoryImageSource(w, h, pixels, 0, w));
gg.drawImage(art, 0, 0, this);
}
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.getContentPane().add(new MainClass());
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(200, 200);
frame.setVisible(true);
}
}