Drawing a Box with many rectangles inside

Question

I've been trying to make an applet that has 100 equally defined rectangles going across. They will have different shades going from light to dark. This is what I have gotten so far:
import java.applet.Applet;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Graphics2D.*;
import java.awt.Rectangle;
import java.awt.BasicStroke;
import java.awt.Color;
public class Flags3 extends Applet
     public Flags3()
     public void paint(Graphics g)
          int w = getWidth();
          int h = getHeight();
          int x = w-w;
          int y = h-h;
          Graphics2D g2 = (Graphics2D)g;
          System.out.println("Width:"+getWidth()+" Height: "+getHeight());
int i;
int grayy = 250;
          for ( i=1; i<100; i++)
                    Color newGrey = new Color(0,0,0,grayy);
                    g2.setColor(newGrey);
                    Rectangle bar = new Rectangle (x,(h/100)*i, w, (h/100)*i);
                    g2.fill(bar);
                    grayy = grayy - 6;
}I want it to look like this but with 100 rectangles instead of the 5.
http://img339.imageshack.us/my.php?image=boxxi9.jpg
Why does the rgb values have 4 integers instead of 3? Also can anyone recommend a good java book for beginners.
Thanks for the help.
Message was edited by:
ButcherBay
Message was edited by:
ButcherBay

Answer 1

public class Flags3 extends JFrame {
    public Flags3() {
        setContentPane( new JPanel() {
            public void paintComponent(Graphics g) {
                int w = getWidth();
                int h = getHeight();
                int x = 0;
                int y = 0;
                System.out.println("Width:"+getWidth()+" Height: "+getHeight());
                for (int i=0; i<100; i++) {
                    Color newGrey = Color.getHSBColor(150, 0, i/100.0f);
                    g.setColor(newGrey);
                    g.fillRect(0, (h/100)*i, w, (h/100));
        Dimension size = new Dimension(800, 600);
        getContentPane().setPreferredSize(size);
        getContentPane().setMinimumSize(size);
        getContentPane().setMaximumSize(size);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        pack();
        setVisible(true);
    public static void main(String[] args) {
        new Flags3();
}I wrote this mainly to make sure I wasn't giving you bad info, but I also improved your paint method a little bit. It's a JFrame instead of a JApplet, so you'll have to make some changes, but it gives the full range of black to white (although it doesn't include full brightness white, the B value only goes to .99).