[ibexpiotr]

im writing a program that draws stuff, rite now im only trying to draw lines, and storing their values in an arraylist, and then reading them back and drawing.
heres the code

import javax.swing.JPanel;
import java.awt.*;
import java.awt.event.*;
import java.util.ArrayList;

public class DrawPanel extends JPanel
{
       private Point point1 = null, point2 = null;
       private ArrayList line = new ArrayList();

       public DrawPanel()
       {
               DrawListener listener = new DrawListener();
               addMouseListener (listener);
               addMouseMotionListener(listener);

               setBackground (Color.white);
               setPreferredSize (new Dimension(400, 300));
       }

       public void paintComponent (Graphics page)
       {
               super.paintComponent (page);

               page.setColor (Color.black);
               for(int x = 0; x < line.size(); ++x)
               {
                       if(line.get(x) != null & line.get(x) != null)
                       {
							  		page.drawLine (((Point)line.get(x)).x, ((Point)line.get(x)).y, ((Point)line.get(x+1)).x, ((Point)line.get(x+1)).y);
                       }
               }
       }

       private class DrawListener implements MouseListener, MouseMotionListener
       {
               public void mousePressed (MouseEvent event)
               {
                       point1 = event.getPoint();
                       line.add(point1);
               }
               public void mouseDragged(MouseEvent event)
               {
                       point2 = event.getPoint();
                       line.add(point2);
                       repaint();
               }

               public void mouseClicked (MouseEvent event) {}
               public void mouseReleased (MouseEvent event) {}
               public void mouseEntered (MouseEvent event) {}
               public void mouseExited (MouseEvent event) {}
               public void mouseMoved (MouseEvent event) {}
       }
}