MouseDragged Event

[Preethi]

I could able to drag the rectangle..but the initially placed postion was repainted
It remain in the same position..can u help me

public class mousedrag extends javax.swing.JApplet 
{
    Imagepanel image;
    @Override
    public void init()
    {
        Container cont = getContentPane();
        cont.setLayout(new BorderLayout());
        setPreferredSize(new Dimension(300, 300));
        JScrollPane scroll = new JScrollPane();
        getContentPane().add(scroll, BorderLayout.CENTER);
        scroll.getViewport().add(new Imagepanel());
        
           
    }
    
     private class Imagepanel extends JPanel implements MouseListener,MouseMotionListener{
     
     public Imagepanel() 
             { 
                 panel();
                 addMouseMotionListener(this);
                 addMouseListener(this);
                 
                 }
                 protected void paintComponent(Graphics g)
                 {
                     super.paintComponent(g);
                     Graphics2D g2 = (Graphics2D)g;
                     g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
                     //MouseEvent e1 = this.e;
                     //g2.setColor(getBackground());
                     //g2.fillRect(0, 0, getWidth(), getHeight());
                     //g2.setColor(getForeground());
                     g2.setColor(getBackground());   
                     g2.fillRect(0, 0, getWidth(), getHeight()); 
                     g2.setColor(getForeground());  
                     drawdig(g2);
                     drawCalendar(g2);
                 }
                 
                  public void drawdig(Graphics g)
                 {
                     Graphics2D g2 = (Graphics2D)g;
     
                     g2.setPaint(new Color(0,157,250));
                     System.out.println(rectangles.size()+"SIZE");
                     for(Rectangle ret : rectangles)
                     {   
                         g2.draw(ret);
                         g2.fill(ret);
                     
                   }
                public void mouseDragged(MouseEvent e)
		      {
		            Point p = e.getPoint();
		            Rectangle[] r = rectangles.toArray(new Rectangle[rectangles.size()]);
		            for(int i=0, j = rectangles.size(); i<j ; i++)
		            {
		                Point lastP = (Point)lastPos.get(r[i]);
		                if(r[i].contains(p))
		                {
		                    r[i].translate(e.getX(), e.getY());
		                    this.repaint();
		                }
		                
		                lastPos.put(r[i], p);
		            }
		public void mouseMoved(MouseEvent e) 
		{
			lastPos.clear();  
        	}
        }

[Preethi]

Any help,please!!