code: protected final JButton getButtonCancel() {
          if (buttonCancel == null) {
              buttonCancel = new JButton();
              buttonCancel.setText("Cancel");
              buttonCancel.setPreferredSize(new Dimension(80, 26));
              buttonCancel.addActionListener(new ActionListener() {
                  public void actionPerformed(final ActionEvent e) {
                      if (destDirSelector != null) {
                          destDirSelector.cancel();
                      }
                  }
              });
          }
          return buttonCancel;
      }
docs: Returns the 'Cancel' button for usage as default button.
  
  @return Button.