Need help with classes in Applets and drawing buildings.

Question

I'm trying to create an Applet that draws a starfield (I got that right) and then searches for any parameters in the Applet tag. The Applet then draws as many buldings as there are parameters in the Applet tag, and uses the number in the parameter as the height. I have it working OK, but it won't draw the buildings. Here is me code:
import java.applet.Applet;
import java.awt.*;
import java.awt.geom.*;
import java.util.*;
import javax.swing.*;
public class Skyline extends Applet {
public void init() {
setBackground(Color.black);
public void paint(Graphics g) {
Graphics2D pen = (Graphics2D) g;
Random generator = new Random();
Stars starField = new Stars();
starField.drawStars(pen, getWidth(), getHeight());
int n = 1;
String param = null;
while((param = getParameter("param" + n)) != null) {
n++;
int startX = 0;
int startY = getHeight();
int height = 0;
int width = getWidth() / (n + 2);
Building structure = new Building();
structure.drawBuilding(pen, height, width, startX, startY, n);
class Stars {
public void drawStars(Graphics2D pen, int Width, int Height) {
Random generator = new Random();
int runs = 1;
while (runs <= 1000) {
int Xcord = generator.nextInt(Width - 3);
int Ycord = generator.nextInt(Height - 3);
Ellipse2D.Double star
= new Ellipse2D.Double(Xcord, Ycord, 3, 3);
pen.setColor(Color.white);
pen.fill(star);
runs++;
class Building {
public void drawBuilding(Graphics2D pen, int height, int width, int startX, int startY, int n) {
Random generator = new Random();
int n2 = 1;
int runs = 1;
String input = "";
int red = generator.nextInt(100),
green = generator.nextInt(100),
blue = generator.nextInt(100);
pen.setColor(new Color(red, green, blue));
while (runs <= n) {
input = getParameter("building" + n2);
height = Integer.parseInt(input);
height = startY - height;
Rectangle building = new Rectangle(startX, startY, height, width);
pen.fill(building);
startY = startY + width;
n2++;
runs++;
Can anyone help me?

Answer 1

That didn't work, so I looked at the code again and found some errors. I decided to rewrite it, here is the updated code...
import java.applet.Applet;
import java.awt.*;
import java.awt.geom.*;
import java.util.*;
import javax.swing.*;
public class Skyline extends Applet {
public void init() {
setBackground(Color.black);
public void paint(Graphics g) {
Graphics2D pen = (Graphics2D) g;
Random generator = new Random();
Stars starField = new Stars();
starField.drawStars(pen, getWidth(), getHeight());
Building structure = new Building();
structure.drawBuilding(pen);
class Stars {
public void drawStars(Graphics2D pen, int Width, int Height) {
Random generator = new Random();
int runs = 1;
while (runs <= 1000) {
int Xcord = generator.nextInt(Width - 3);
int Ycord = generator.nextInt(Height - 3);
Ellipse2D.Double star
= new Ellipse2D.Double(Xcord, Ycord, 3, 3);
pen.setColor(Color.white);
pen.fill(star);
runs++;
class Building {
public void drawBuilding(Graphics2D pen) {
Random generator = new Random();
int n = 1;
int n2 = 1;
int runs = 1;
String input = "";
String param = "";
while ((param = getParameter("building" + n)) != null) {
n++;
int height = getHeight();
int width = getWidth();
int startX = 0;
int startY = height;
int red = generator.nextInt(100),
green = generator.nextInt(100),
blue = generator.nextInt(100);
pen.setColor(new Color(red, green, blue));
while (runs <= n) {
height = getHeight();
input = getParameter("building" + n2);
height = Integer.parseInt(input);
height = startY - height;
Rectangle building = new Rectangle(startY, startX, height, width);
pen.fill(building);
startX = startX + width;
n2++;
runs++;
I can get it to draw one large black building, but that's it.