Fill array with Hue values

Question

Trying to build (simple) color palette, but keep getting ArrayIndexOutOfBoundsException: 0 when trying to fill the array with Hue values (Saturation and Brightness remain 100%):
private Color[] hsb = new Color[numberOfCircles];
float h=0;
float raise=(1.f/numberOfCircles);
for (int i=0; i<stKrogcev; i++) {
    hsb=Color.getHSBColor(h,1.0f,1.0f); //getHSBColor: "Creates a Color object based on the specified values for the HSB color model."
h+=raise;
}What am I doing wrong?
What other way could you fill array (Color, int, float, ...) with Hue values?
This is what I have thus far (only colors missing; not sure whether Sun supports images):  [http://www.shrani.si/f/1G/uM/v29MKIC/palette.jpg]. First three columns in the right-hand table are awaiting RGB values respectively, the last column gets Hue value.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

Answer 1

pbrockway2, numberOfCircles (or stKrogcev ) is an int, and is NOT zero. That Color[] hsb is zero.
import javax.swing.*;
import java.awt.*;
public class BarvnaPaleta {
     public static void main (String[] args) {
          System.out.print("Stevilo krogcev: ");
          int n = BranjePodatkov.preberiInt(); // BranjePodatkov: just some custom class for reading input
          Okno o = new Okno(n);
          o.setVisible(true);
class Okno extends JFrame {
     RisalnaPlosca risalna;
     public Okno(int n) {
          setTitle("Barvna Paleta");
          setSize(1200,900);
          setLocation(0,0);
          setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          risalna = new RisalnaPlosca(n);
          add(risalna);
class RisalnaPlosca extends JPanel {
     private final int ROB = 300;     
     int     stKrogcev;
     private int izhX, izhY;     
     private int     r1;
     private int     sirina = 60;     
     private int     visina = 20;     
     private double x, y, r2, r3;     
     private double vmesniKot;
     private double polovicaVmesnegaKota;
     //the much needed color arrays
     public Color[] hsb = new Color[stKrogcev];     
     private String[] red = new String[stKrogcev];     
     private String[] green = new String[stKrogcev];     
     private String[] blue = new String[stKrogcev];     
     public RisalnaPlosca(int n) { //constructor     
          stKrogcev = n;
          setBackground(Color.white);
     public void paintComponent(Graphics g) {
          super.paintComponent(g);
          izhX = getWidth()/2 -r1;
          izhY = getHeight()/2 -r1;          
          vmesniKot=(2*Math.PI/stKrogcev);
          polovicaVmesnegaKota=(vmesniKot)/2;          
          r1=getHeight();
          r3=(r1*Math.sin(polovicaVmesnegaKota))/(1+Math.sin(polovicaVmesnegaKota));
          r2=r1-r3;                    
          narisiKrog(g);
          napolniHSB(g); //  LINE 53
          narisiKrogce(g);
     private void narisiKrog(Graphics g) { //draw the BIG Circle
          g.setColor(Color.BLACK);
          g.drawOval(0, 0, r1, r1);
     private void narisiKrogce(Graphics g) { //draw small circles (as many as user wants, max. is 256 of Hue values!
          for(int i=0; i<stKrogcev; i++) {
               x=(r2/2)*(Math.cos(vmesniKot*i)+1);
               y=(r2/2)*(Math.sin(vmesniKot*i)+1);
                       //can't use below two because of the "fillHSB"=="napolniHSB" method not working
               //Color c = new Color(Integer.parseInt(red),Integer.parseInt(green[i]),Integer.parseInt(blue[i]));
               //g.setColor(c);
               g.drawOval((int)x, (int)y, (int)r3, (int)r3);
               narisiLegendo((int)x,(int)y, i, g); //draw a legend (last method)
     private void napolniHSB(Graphics g) { //fillHSB method
float h=0, raise=1.0f/stKrogcev;
for (int i=0; i<stKrogcev; i++) {
hsb[i]=Color.getHSBColor(h,1.0f,1.0f); // LINE 75
red[i]=Integer.toString(hsb[i].getRed()); // this and below two for converting HSB/HSL into RGB
green[i]=Integer.toString(hsb[i].getGreen());
blue[i]=Integer.toString(hsb[i].getBlue());
h+=raise;
     private void narisiLegendo(int x, int y, int i, Graphics g) { //draw a legend, i.e. 4 right columns
//can't use drawString as there are no color arrays (yet)
               g.drawLine((int)(x+r3/2),(int)(y+r3/2),getWidth()-ROB,(visina+i*visina)+visina/2);
               g.drawRect(getWidth()-ROB, (visina+i*visina), sirina, visina); //Red
               //g.drawString(red[i], getWidth()-ROB, (visina+i*visina));
               g.drawRect(getWidth()-ROB+sirina, (visina+i*visina), sirina, visina); //Green
               //g.drawString(green[i], getWidth()-ROB, (visina+i*visina));
               g.drawRect(getWidth()-ROB+2*sirina, (visina+i*visina), sirina, visina); //Blue
               //g.drawString(blue[i], getWidth()-ROB, (visina+i*visina));
               g.drawRect(getWidth()-ROB+3*sirina, (visina+i*visina), sirina, visina); //Hue
               //g.drawString(, getWidth()-ROB, (visina+i*visina));