Java JPanel Paint Scaling

Question

Following code work for visualizing a molecule on a JPanel except it does not rescale when I change the size of JPanel at runtime. The Chemistry Development Kit is used for generating rendered Image. A molecule is passed to MoleculeViewer for visualizing. What am I doing wrong??

Answer 1

Adding following resolved the not redrawing upon scaling problem 

renderer.paint(molecule_, new AWTDrawVisitor(g2), new Rectangle2D.Double(0, 0, w, h), false);
            g2.dispose();
            }
            else