JPanel content = new JPanel(new BorderLayout(0, SPACE));
JList masterList = new JList(new String[] { "hello", "there", "now", "what", "buddy" });
masterList.setVisibleRowCount(5);
DetailPanel dp = new ToStringDetailPanel();
content.add(new JScrollPane(masterList), BorderLayout.NORTH);
content.add(dp, BorderLayout.CENTER);
JButton b = new JButton("Clear Selection");
Box box = Box.createHorizontalBox();