JProgressBarの進捗文字列の字揃えを変更する

JProgressBar bar = new JProgressBar(model) {
  private final JLabel label = new JLabel(getString(), halign);
  private final ChangeListener changeListener = new ChangeListener() {
    @Override public void stateChanged(ChangeEvent e) {
      label.setText(getString());
    }
  };

  @Override public void updateUI() {
    removeChangeListener(changeListener);
    removeAll();
    super.updateUI();
    EventQueue.invokeLater(new Runnable() {
      @Override public void run() {
        setLayout(new BorderLayout());
        addChangeListener(changeListener);
        add(label);
        label.setBorder(BorderFactory.createEmptyBorder(0, 4, 0, 4));
      }
    });
  }
};