Thread: draw line to edge of rectangle

i want my line 2d to stop being drawn when it hits the edge of the rectangle 2d (code below)

my declairations:

    Point pointStart = new Point(posX, posY);
    Point pointEnd   = new Point(0,0);
    Rectangle2D example;
    public static boolean shooting = false;
    Line2D line = new Line2D.Double();
    int x = 0;
    int y = 0;

the mouse listener:

        addMouseMotionListener(new MouseMotionAdapter() {
            public void mouseMoved(MouseEvent e) {
                pointEnd = e.getPoint();
        		linex = pointEnd.x + 10;
        		liney = pointEnd.y + 10;
            }
        });

the paint comptent: (i am repainting at end so it is a loop)

       int x = (this.getWidth() - bkgrndImage.getWidth()) / 2;
       int y = (this.getHeight() - bkgrndImage.getHeight()) / 2;
 line = new Line2D.Double(x, y, linex, liney);
 example = new Rectangle2D.Double(mob1x, mob1y,50,50);
    g2.setStroke(new BasicStroke(3f));
    g2.setPaint(Color.RED);
 if (shooting){
 
    	g2.draw(line);
 
    	if(line.intersects(example))
    	{
			System.out.println("line collided with rect");
			pointEnd.x = (int) example.getCenterX();
			pointEnd.y = (int) example.getCenterY();
	        //line = new Line2D.Double(x, y, pointEnd.x, pointEnd.y);
       // g2.draw(line);
    }
    } else {
		pointEnd.x = (int) x;
		pointEnd.y = (int) y;
		//repaint();
    }

i dont think i have missed anything
NOTE: it does work overall but i want it so instead of jumping to the middle, it stops at the edge.

--Thanks in advanced!

--Bc1151