JComponent before = makeExamplePane();
// Replace the MetalScrollBarUI with our own!
UIManager.put("ScrollBarUI", "MyMetalScrollBarUI");
JComponent after = makeExamplePane();
JFrame f = new JFrame();
f.addWindowListener(new BasicWindowMonitor());
Container c = f.getContentPane();
c.setLayout(new GridLayout(2, 1, 0, 1));
c.add(before);
c.add(after);
f.setSize(450, 400);
f.setVisible(true);