JTabbedPane标签面板例子

[code="java"]
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() {
		// 创建选项卡的图标
		m_tabimage = new ImageIcon("tabimage.gif");
		// 创建三个图标
		m_tab1 = new ImageIcon("1.gif");
		m_tab2 = new ImageIcon("2.gif");
		m_tab3 = new ImageIcon("3.gif");
		// ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
		// 下面是功能按钮面板的创建过程
		// ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
		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("添加选项卡");
		m_removeButton = new JButton("删除选项卡");
		// 添加事件监听器
		m_topButton.addActionListener(this);
		m_bottomButton.addActionListener(this);
		m_leftButton.addActionListener(this);
		m_rightButton.addActionListener(this);
		m_addButton.addActionListener(this);
		m_removeButton.addActionListener(this);
		// 把四个功能按钮加入功能按钮面板中
		buttonPanel.add(m_topButton);
		buttonPanel.add(m_bottomButton);
		buttonPanel.add(m_leftButton);
		buttonPanel.add(m_rightButton);
		buttonPanel.add(m_addButton);
		buttonPanel.add(m_removeButton);

		// 把选项卡窗格容器和功能按钮面板加入到内容窗格容器中
		m_tabbedPane = new JTabbedPane(SwingConstants.TOP);
		getContentPane().add("South", buttonPanel);
		getContentPane().add("Center", m_tabbedPane);

		// 创建三个选项卡
		createTab();
		createTab();
		createTab();
		// 设置显示第一个选项卡
		m_tabbedPane.setSelectedIndex(0);
	}

	// 创建选项卡
	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);
		// 把新创建的选项卡添加到选项卡容器中
		m_tabbedPane.addTab("Tab #" + m_tabbedPane.getTabCount(), m_tabimage,
				label);
	}

	// 删除选项卡
	public void deleteTab() {
		// 删除最后一个选项卡
		if (m_tabbedPane.getTabCount() > 0)
			m_tabbedPane.removeTabAt(m_tabbedPane.getTabCount() - 1);
	}

	// 处理按钮事件
	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();
		// 重新绘制选项卡容器
		m_tabbedPane.revalidate();
		m_tabbedPane.repaint();
	}

	// 程序的入口方法
	public static void main(String[] args) {
		TabbedPaneDemo frame = new TabbedPaneDemo();
		// 设置框架窗体的事件监听(关闭窗体事件)
		frame.addWindowListener(new WindowAdapter() {
			public void windowClosing(WindowEvent e) {
				System.exit(0);
			}
		});
		// 显示框架窗体
		frame.pack();
		frame.setVisible(true);
	}
}
[/code]