Use hidden panel
package Assis;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class TabbedPaneDemo extends JFrame implements ActionListener {
private static final long serialVersionUID = 1L;
private ImageIcon m_tabimage;
private ImageIcon m_tab1;
private ImageIcon m_tab2;
private ImageIcon m_tab3;
private JTabbedPane m_tabbedPane;
private JButton m_topButton;
private JButton m_bottomButton;
private JButton m_leftButton;
private JButton m_rightButton;
private JButton m_addButton;
private JButton m_removeButton;
public TabbedPaneDemo() {
// create the icon for the tab
m_tabimage = new ImageIcon("tabimage.gif");
// create three icons
m_tab1 = new ImageIcon("1.gif");
m_tab2 = new ImageIcon("2.gif");
m_tab3 = new ImageIcon("3.gif");
// ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
// The following is the creation process of the function button panel
// ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
JPanel buttonPanel = new JPanel();
buttonPanel.setLayout(new GridLayout(1, 6));
m_topButton = new JButton("顶部");
m_bottomButton = new JButton("底部");
m_leftButton = new JButton("左边");
m_rightButton = new JButton("右边");
m_addButton = new JButton("Add Tab");
m_removeButton = new JButton("Remove Tab");
// add event listener
m_topButton.addActionListener(this);
m_bottomButton.addActionListener(this);
m_leftButton.addActionListener(this);
m_rightButton.addActionListener(this);
m_addButton.addActionListener(this);
m_removeButton.addActionListener(this);
// Add four function buttons to the function button panel
buttonPanel.add(m_topButton);
buttonPanel.add(m_bottomButton);
buttonPanel.add(m_leftButton);
buttonPanel.add(m_rightButton);
buttonPanel.add(m_addButton);
buttonPanel.add(m_removeButton);
// Add the tab pane container and function button panel to the content pane container
m_tabbedPane = new JTabbedPane(SwingConstants.TOP);
getContentPane().add("South", buttonPanel);
getContentPane().add("Center", m_tabbedPane);
// create three tabs
createTab();
createTab();
createTab();
// set the first tab to be displayed
m_tabbedPane.setSelectedIndex(0);
}
// create tab
public void createTab() {
JLabel label = null;
switch (m_tabbedPane.getTabCount() % 3) {
case 0:
label = new JLabel("Tab #" + m_tabbedPane.getTabCount(), m_tab1,
SwingConstants.CENTER);
break;
case 1:
label = new JLabel("Tab #" + m_tabbedPane.getTabCount(), m_tab2,
SwingConstants.CENTER);
break;
case 2:
label = new JLabel("Tab #" + m_tabbedPane.getTabCount(), m_tab3,
SwingConstants.CENTER);
break;
}
label.setVerticalTextPosition(SwingConstants.BOTTOM);
label.setHorizontalTextPosition(SwingConstants.CENTER);
label.setOpaque (true);
label.setBackground(Color.white);
// Add the newly created tab to the tab container
m_tabbedPane.addTab("Tab #" + m_tabbedPane.getTabCount(), m_tabimage,
label);
}
// delete tab
public void deleteTab() {
// delete the last tab
if (m_tabbedPane.getTabCount() > 0)
m_tabbedPane.removeTabAt(m_tabbedPane.getTabCount() - 1);
}
// handle button events
public void actionPerformed(ActionEvent e) {
if (e.getSource() == m_topButton)
m_tabbedPane.setTabPlacement(SwingConstants.TOP);
else if (e.getSource() == m_bottomButton)
m_tabbedPane.setTabPlacement(SwingConstants.BOTTOM);
else if (e.getSource() == m_leftButton)
m_tabbedPane.setTabPlacement(SwingConstants.LEFT);
else if (e.getSource() == m_rightButton)
m_tabbedPane.setTabPlacement(SwingConstants.RIGHT);
else if (e.getSource() == m_addButton)
createTab();
else if (e.getSource() == m_removeButton)
deleteTab();
// redraw the tab container
m_tabbedPane.revalidate();
m_tabbedPane.repaint();
}
// entry method of the program
public static void main(String[] args) {
TabbedPaneDemo frame = new TabbedPaneDemo();
// Set the event listener of the frame form (close the form event)
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
// show frame form
frame.pack();
frame.setVisible(true);
}
}
Source: http://lvdong5830.iteye.com/blog/574695