How to use

setContentPane

method

in

org.jfree.ui.tabbedui.TabbedFrame

/**
 * Initialises the dialog.
 *
 * @param tabbedUI  the UI that controls the dialog.
 */
public void init(final AbstractTabbedUI tabbedUI) {
  this.tabbedUI = tabbedUI;
  this.tabbedUI.addPropertyChangeListener(
    AbstractTabbedUI.JMENUBAR_PROPERTY, new MenuBarChangeListener()
  );
  addWindowListener(new WindowAdapter() {
    public void windowClosing(final WindowEvent e) {
      getTabbedUI().getCloseAction().actionPerformed
        (new ActionEvent(this, ActionEvent.ACTION_PERFORMED, null, 0));
    }
  });
  final JPanel panel = new JPanel();
  panel.setLayout(new BorderLayout());
  panel.add(tabbedUI, BorderLayout.CENTER);
  setContentPane(panel);
  setJMenuBar(tabbedUI.getJMenuBar());
}

/**
 * Initialises the dialog.
 *
 * @param tabbedUI  the UI that controls the dialog.
 */
public void init(final AbstractTabbedUI tabbedUI) {
  this.tabbedUI = tabbedUI;
  this.tabbedUI.addPropertyChangeListener(
    AbstractTabbedUI.JMENUBAR_PROPERTY, new MenuBarChangeListener()
  );
  addWindowListener(new WindowAdapter() {
    public void windowClosing(final WindowEvent e) {
      getTabbedUI().getCloseAction().actionPerformed
        (new ActionEvent(this, ActionEvent.ACTION_PERFORMED, null, 0));
    }
  });
  final JPanel panel = new JPanel();
  panel.setLayout(new BorderLayout());
  panel.add(tabbedUI, BorderLayout.CENTER);
  setContentPane(panel);
  setJMenuBar(tabbedUI.getJMenuBar());
}

/**
 * Initialises the dialog.
 *
 * @param tabbedUI  the UI that controls the dialog.
 */
public void init(final AbstractTabbedUI tabbedUI) {
  this.tabbedUI = tabbedUI;
  this.tabbedUI.addPropertyChangeListener(
    AbstractTabbedUI.JMENUBAR_PROPERTY, new MenuBarChangeListener()
  );
  addWindowListener(new WindowAdapter() {
    public void windowClosing(final WindowEvent e) {
      getTabbedUI().getCloseAction().actionPerformed
        (new ActionEvent(this, ActionEvent.ACTION_PERFORMED, null, 0));
    }
  });
  final JPanel panel = new JPanel();
  panel.setLayout(new BorderLayout());
  panel.add(tabbedUI, BorderLayout.CENTER);
  setContentPane(panel);
  setJMenuBar(tabbedUI.getJMenuBar());
}