[RESOLVED] How do I repaint without removing previous drawings?

[Feebz]

class ShapePanel extends JPanel {
		Shape currentShape;
		public void setShape(Shape shape) {
			currentShape = shape; repaint();
		}  
		public void update(Graphics g) {
			paint(g);
		}
		public void paintComponent(Graphics g) {
			super.paintComponent(g);
			if (currentShape != null) currentShape.draw(g);
		}
	}

This is called whenever I want to draw a shape to a JPanel. However, everytime it is done, the panel removes all previous drawings, which is not what I intended to be. How do I do it?