I typed this in from an old "teach yourself java 1.2 in 24 hours"

/*
* JavaMan.java
*/
import java.awt.*;
import javax.swing.*;
import java.awt.geom.*;
/**
*
*
*/
public class JavaMan extends javax.swing.JApplet {
   
   float height;
   float width;
   
   /** Creates a new instance of JavaMan */
   public JavaMan() {
   }
   
   public void init(){
   setBackground(Color.yellow);
   
   }
   
   public void paint(Graphics2D screen){
   Graphics2D screen2D = (Graphics2D) screen;
   height = (float) getSize().height;
   width = (float) getSize().width;
   screen2D.setColor(Color.black);
   RoundRectangle2D.Float border = new RoundRectangle2D.Float(10F,  10F,
width-20, height-20,  15F, 15F);
   screen2D.draw(border);
   
   screen2D.setColor(Color.gray);
   Rectangle2D.Float box = new Rectangle2D.Float(200F,  90F, 100F, 100F);
   screen2D.fill(box);
   
   screen2D.setColor(Color.blue);
   for (int x = 200; x < 300; x += 5)
       for(int y = 90; y < 190; y += 5){
       Rectangle2D.Float r = new Rectangle2D.Float(x, y, 5, 5);
       screen2D.draw(r);
       }
   
   screen2D.setColor(Color.black);
   Line2D.Float ln1 = new Line2D.Float(200F, 110F, 170F, 115F);
   Line2D.Float ln2 = new Line2D.Float(170F, 115F, 160F, 90F);
   Line2D.Float ln3 = new Line2D.Float(160F, 90F, 150F, 94F);
   Line2D.Float ln4 = new Line2D.Float(160F, 90F, 153F, 85F);
   Line2D.Float ln5 = new Line2D.Float(160F, 90F, 158F, 83F);
   Line2D.Float ln6 = new Line2D.Float(160F, 90F, 163F, 84F);
   screen2D.draw(ln1);
   screen2D.draw(ln2);
   screen2D.draw(ln3);
   screen2D.draw(ln4);
   screen2D.draw(ln5);
   screen2D.draw(ln6);
   
   screen2D.setColor(Color.white);
   Ellipse2D.Float head = new Ellipse2D.Float(220F, 30F, 60F, 60F);
   screen2D.fill(head);
   
   screen2D.setColor(Color.green);
   Ellipse2D.Float leftEye = new Ellipse2D.Float(245F, 45F, 5F, 5F);
   Ellipse2D.Float rightEye = new Ellipse2D.Float(255F, 45F, 5F, 5F);
   screen2D.fill(leftEye);
   screen2D.fill(rightEye);
   
   screen2D.setColor(Color.black);
   Rectangle2D.Float mouth = new Rectangle2D.Float(245F, 65F, 15F, 15F);
   screen2D.fill(mouth);
   
   screen2D.setColor(Color.magenta);
   GeneralPath chapeau = new GeneralPath();
   chapeau.moveTo(205f, 43F);
   chapeau.lineTo(305F, 40F);
   chapeau.lineTo(240F, 15F);
   chapeau.lineTo(205F, 43F);
   chapeau.closePath();
   screen2D.fill(chapeau);
       
   }
}

It is meant to draw a 2D man. However what happens is, the window flickers
yellow for a second and it just goes white. I have checked for typo errors
but no avail.

What am I missing?