import awb.*;
import java.awt.*;
import java.awt.event.*;

public class GDemo3 extends java.applet.Applet implements ActionListener
// A demonstration program for the Graphics methods combined with arrays
{
    Graphics g;
    Canvas c;
    Button b1, b2;
    int x[] = {45, 95, 130, 130, 95, 45, 10, 10};
    int y[] = {10, 10, 45, 95, 130, 130, 95, 45};
    int n;
   
    public void init()
    {   
        c = new Canvas();
        c.setSize(200, 200);
        add(c);
        g = c.getGraphics();
        b1 = new Button("Start");
        b2 = new Button("StringFig");
        b1.addActionListener(this);
        b2.addActionListener(this);
        add(b1); add(b2);
        n = 8;
    }           
        
    public void actionPerformed(ActionEvent event)
    {
        Object cause = event.getSource();
        
        if (cause == b1)                                                    
        {
            g.setColor(Color.white);	 // Color the whole canvas white
            g.fillRect(0, 0, 200, 200);
        }
        if (cause == b2)
        {
            int k, j;
            k = 0;
            g.setColor(Color.blue);
            while (k < n)
            {
                j = 0;
                while (j < n)
                {
                    g.drawLine(x[k], y[k], x[j], y[j]); 
                    j = j + 1;
                }
                k = k + 1;
            }
        }
    }
}