java help: mouse insensitive to the hole

[loore]

hi guys..im having a problem with this code. The following codes produces a circle with a hole in the middle. i have to code it in such a way that the mouse should be insensitive with the hole. i.e. when i drag the circle holding on the hole, it should b dragged. i have done this with a square it works perfectly but not this circle. guys help please my due date is tmrw morning. thank you so much in advance.

import java.awt.*;
import java.awt.geom.*;

public class CircleWithHole extends Circle {
   int holeSize ;
   
   public CircleWithHole(int left, int top, int size, int holeSize) {
      super(left,top,size) ;
      this.holeSize = holeSize ;
   }
   
   public void draw(Graphics2D g) {
      Area circle = new Area(new Ellipse2D.Double(left,top,size,size)) ;
      int gap = (size-holeSize)/2 ;
      Area hole = new Area(new Ellipse2D.Double(left+gap, top+gap, holeSize,holeSize)) ;
      circle.subtract(hole) ;
      g.setPaint(paint);
      g.fill(circle) ;
      g.setPaint(Color.black) ;
      g.draw(circle) ;
   }
   
   public boolean touch(int x, int y) {
      double a = x - (left + 0.5 + size) ; 
      double b = y - (top + 0.5 + size) ;
      double c = Math.hypot(a,b) ;
//      To ensure figure does not jump to cursor position from initial position
      dx = x - left ;
      dy = y - top ;
      return c<= 0.5 + size ;
   }
}

[Norm]

with a square it works perfectly but not this circle.

What is the difference between the code that works and this code?