Null pointer..moving

Question

I have to drag and drop counters on a screen, i have to drop them on the rectangle, so i cant drag outside the rectangle. this is the code i have , i have a null pointer at the int current = find(e.getPoint());
its the find method it has the problem with. i dont think the code would work anyway.
so does any1 have any modifications they would make
please help.
thanx
public int find(Point2D p)
for (int i = 0; i < this.rectangles.size(); i++)
Rectangle2D r = (Rectangle2D)rectangles.get(i);
if (r.contains(p)) return i;
return -1;
private class MouseHandler extends MouseAdapter
     public void mousePressed(MouseEvent e)
               int current = find(e.getPoint());
     x = e.getX();
y = e.getY();
private class MouseMotionHandler
          implements MouseMotionListener{ 
public void mouseMoved(MouseEvent e)
if (find(e.getPoint()) == -1)
setCursor(Cursor.getDefaultCursor());
else
setCursor(Cursor.getPredefinedCursor
(Cursor.CROSSHAIR_CURSOR));
     public void mouseDragged(MouseEvent e)
     if (current != null)
          x = e.getX();
          y = e.getY();
          repaint();

Answer 1

I doubt that e is null, so it must be something in the find method that throws a NullPointerException.
My guess is that either you have null values in rectangles or rectangles itself is null.