Drawig images.

I followed this Draw textured spheres | JavaWorld article and built the code that is written there.































































































































But it does not generate a sphere or ball. Am i using it wrong, or am i missing something?

Java Code:

import java.awt.*;
import java.awt.image.*;
import javax.swing.JFrame;

public class Graafika extends JFrame{
        public Graafika(){
                int width = 200;
                int height = 200;
                Sphere obj = new Sphere(100, 20, new SineTexture(5, 100, 5));
                int[] imageData = new int[width * height];
                
                int sup = 2;
                double supInv = 1.0 / sup;
                for (int j = 0; j < height; ++ j) {
                        for (int i = 0; i < width; ++ i) {
                                RGB pixel = new RGB (0.0, 0.0, 0.0);
                                for (int k = 0; k < sup; ++ k) {
                                        for (int l = 0; l < sup; ++ l) {
                                                Vec ray = new Vec ((i * 2. - width) / 2. + k * supInv,
                           (j * 2. - height) / 2. + l * supInv, 150.0);
                                                RGB rgb = obj.getIntersection (ray);
                                                pixel.add (rgb);
                                                }
                                        }
                                pixel.scale (supInv * supInv);
                                imageData[i + width * j] = pixel.toRGB ();
                        }
                }
                
                MemoryImageSource source = new MemoryImageSource(width, height, imageData,0, width);
                source.setAnimated(true);
                source.setFullBufferUpdates(true);
                Image tile = createImage(source);
                source.newPixels();
        
                setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                setSize(400, 300);
                setLocationRelativeTo(null);
                setTitle("Graafika");
                setResizable(false);
                setVisible(true);
                }
                
        public static void main(String[] args){
                new Graafika();
                }
        }

Can someone tell me what i did wrong or what did i miss.