New to Java

Back again. Could anyone tell me why the points don't seem to be updating, thus drawing a red rect is failing on run? Essentially, I've been trying to get a more complicated version of this--an outline of a rect on drag, but right now even a stationary rectangle would be reassuring. I think I'm seeing a tiny red dot (points not updating in mouseDragged), but maybe I don't understand how MouseEvent.getPoint() works in conjunction with mouseDragged()? Here's my code, there's quite a few extra variables floating around from my main goal and testing...

With main...

   import javax.swing.*;
   import java.awt.*;
   import java.awt.event.*;

    public class Lab2Test extends JFrame 
   {
      boolean pressed = false, dragged = false, released = false;
      Point start = new Point(0,0);
      Point old = new Point(0,0);
      Point last = new Point(0,0);
   	
       public Lab2Test() 
      {
         super("Lab 2");
         setBounds(100,100,500,500);
         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      
         Container contentPane = getContentPane();
      
         addMouseListener(new MyListenerTest(this));
      	
         setSize(500,500);
         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      
         setVisible(true); 
      }
   	
       public void paint(Graphics g)
      { 
			if(pressed)
			{
				super.paint(g);
			}

               g.setColor(Color.red);
               System.out.println("old; x: " + (old.x - start.x) + " y: " + (old.y - start.y));
               System.out.println("new; x: " + (last.x - start.x) + " y: " + (last.y - start.y));
               g.drawRoundRect(start.x, start.y, (last.x - start.x), (last.y - start.y), 20, 20);

      }
       public static void main(String args[]) 
      {
         new Lab2Test();
      }
   }

And the adapter + motionlistener

   import javax.swing.*;
   import java.awt.*;
   import java.awt.event.*;

    public class MyListenerTest extends MouseAdapter implements MouseMotionListener
   {
      Lab2Test theLab;
   	
       public MyListenerTest(Lab2Test ref)
      {
         theLab = ref;
      }
       public void mouseClicked(MouseEvent e)
      {
         System.out.println("mouseClicked at "+e.getX()+", "+e.getY());
      }
       public void mousePressed(MouseEvent e)
      {
         theLab.pressed = true;
         theLab.start = theLab.old = theLab.last = e.getPoint();
         theLab.repaint();
      }
   	
       public void mouseDragged(MouseEvent e)
      {
         theLab.dragged = true;
         theLab.old = theLab.last;
         theLab.last = e.getPoint();
         theLab.repaint();
      }
		
       public void mouseReleased(MouseEvent e)
      {
         theLab.pressed = false;
         theLab.dragged = false;
         theLab.repaint();
      }
   	
       public void mouseMoved(MouseEvent e)
      {
      }   
   }

Thank you in advance for your help.

-k