Java AWT Graphics draw Pie

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.geom.Arc2D;
import java.awt.geom.Ellipse2D;

import javax.swing.JFrame;
import javax.swing.JPanel;

class PiePanel extends JPanel {
  private PieSlice[] slice;
  private int current = 0;
  private float totalSize = 0;
  private Color background;

  public PiePanel(int sliceCount) {
    slice = new PieSlice[sliceCount];
    background = getBackground();/*from   ww  w.  ja  v  a  2  s  . c om*/
  }

  public void addSlice(Color sColor, float sSize) {
    if (current <= slice.length) {
      slice[current] = new PieSlice(sColor, sSize);
      totalSize += sSize;
      current++;
    }
  }

  public void paintComponent(Graphics comp) {
    super.paintComponent(comp);
    Graphics2D comp2D = (Graphics2D) comp;
    int width = getSize().width - 10;
    int height = getSize().height - 15;
    int xInset = 5;
    int yInset = 5;
    if (width < 5) {
      xInset = width;
    }
    if (height < 5) {
      yInset = height;
    }
    comp2D.setColor(background);
    comp2D.fillRect(0, 0, getSize().width, getSize().height);
    comp2D.setColor(Color.lightGray);
    Ellipse2D.Float pie = new Ellipse2D.Float(xInset, yInset, width, height);
    comp2D.fill(pie);
    float start = 0;
    for (int i = 0; i < slice.length; i++) {
      float extent = slice[i].size * 360F / totalSize;
      comp2D.setColor(slice[i].color);
      Arc2D.Float drawSlice = new Arc2D.Float(xInset, yInset, width, height, start, extent, Arc2D.Float.PIE);
      start += extent;
      comp2D.fill(drawSlice);
    }
  }
}

class PieSlice {
  Color color = Color.lightGray;
  float size = 0;

  PieSlice(Color pColor, float pSize) {
    color = pColor;
    size = pSize;
  }
}

public class Main extends JFrame {
  Color uneasyBeingGreen = new Color(0xCC, 0xCC, 0x99);
  Color zuzusPetals = new Color(0xCC, 0x66, 0xFF);
  Color zootSuit = new Color(0x66, 0x66, 0x99);
  Color sweetHomeAvocado = new Color(0x66, 0x99, 0x66);
  Color shrinkingViolet = new Color(0x66, 0x66, 0x99);
  Color miamiNice = new Color(0x33, 0xFF, 0xFF);
  Color inBetweenGreen = new Color(0x00, 0x99, 0x66);
  Color norwegianBlue = new Color(0x33, 0xCC, 0xCC);
  Color purpleRain = new Color(0x66, 0x33, 0x99);
  Color freckle = new Color(0x99, 0x66, 0x33);

  public Main() {
    super("Pie Graph");
    setSize(320, 290);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setVisible(true);

    PiePanel pie = new PiePanel(10);
    pie.addSlice(uneasyBeingGreen, 1350);
    pie.addSlice(zuzusPetals, 1221);
    pie.addSlice(zootSuit, 316);
    pie.addSlice(sweetHomeAvocado, 251);
    pie.addSlice(shrinkingViolet, 201);
    pie.addSlice(miamiNice, 193);
    pie.addSlice(inBetweenGreen, 173);
    pie.addSlice(norwegianBlue, 164);
    pie.addSlice(purpleRain, 143);
    pie.addSlice(freckle, 127);
    add(pie);
  }
  public static void main(String[] arguments) {
    Main pf = new Main();
  }
}