JTreeの水平垂直線を表示しない

final JTree tree = new JTree();
add(new JCheckBox(new AbstractAction("Tree.paintLines") {
  @Override public void actionPerformed(ActionEvent e) {
    if (((JCheckBox) e.getSource()).isSelected()) {
      UIManager.put("Tree.paintLines", Boolean.TRUE);
    } else {
      UIManager.put("Tree.paintLines", Boolean.FALSE);
    }
    SwingUtilities.updateComponentTreeUI(tree); // 左のJTreeだけ更新
  }
}), BorderLayout.NORTH);