Color Swirl Applet

//  this applet displays a message in a contantly changing color

import java.awt.*;

public class ColorSwirl extends java.applet.Applet
                        implements Runnable
{
    Font f = new Font("TimesRoman",Font.BOLD,48);
    Color colors[] = new Color[50];
    Thread runThread;

// initialize the color array

    public void init()
    {
        float c = 0;
        for (int i = 0 ; i < colors.length ; i++) {
            colors[i] =
                Color.getHSBColor(c,(float)1.0,(float)1.0);
            c += 0.02;
        }
    }

    public void start()
    {
        if (runThread == null)
        {
            runThread = new Thread(this);
            runThread.start();
        }
    }

    public void stop()
    {
        if (runThread != null)
        {
            runThread.stop();
            runThread = null;
        }
    }

//  print the message while cycling through the colors

    public void run()
    {

        int i = 0;
        while (true)
        {
            setForeground(colors[i]);
            repaint();
            i++;
            try
            {
                Thread.sleep(50);
            } catch (InterruptedException e) {}
            if (i == colors.length)
                i = 0;
        }
    }

//  set the font and draw the string in the current color

    public void paint(Graphics g)
    {
        g.setFont(f);
        g.drawString("The Color Cycle",50,75);
    }

}