[JAVA100例]015、选项卡（java100例）

[JAVA100例]015、选项卡（java100例）

import javax.swing.JTabbedPane;
import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JFrame;
/**
 * <p>Title: 选项卡演示</p>
 * <p>Description: 这里是一个选项卡演示，点击不同的卡片，显示的内容不同</p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Filename: TabbedPaneDemo.java</p>
 * @version 1.0
 */
import java.awt.*;
import java.awt.event.*;

public class TabbedPaneDemo extends JPanel {
    public TabbedPaneDemo() {
        super(new GridLayout(1, 1));

        ImageIcon icon = createImageIcon("images/middle.gif");
        JTabbedPane tabbedPane = new JTabbedPane();

        Component panel1 = makeTextPanel("#第一个卡片#");
        tabbedPane.addTab("One", icon, panel1,
                          "第一个卡片提示信息！");
        tabbedPane.setSelectedIndex(0);

        Component panel2 = makeTextPanel("##第二个卡片##");
        tabbedPane.addTab("Two", icon, panel2,
                          "第二个卡片提示信息！");

        Component panel3 = makeTextPanel("###第三个卡片###");
        tabbedPane.addTab("Three", icon, panel3,
                          "第三个卡片提示信息！");

        Component panel4 = makeTextPanel("####第四个卡片####");
        tabbedPane.addTab("Four", icon, panel4,
                          "第四个卡片提示信息！");

        //将选项卡添加到panl中
        add(tabbedPane);
    }
/**
 *<br>方法说明：添加信息到选项卡中
 *<br>输入参数：String text 显示的信息内容
 *<br>返回类型：Component 成员对象
 */
    protected Component makeTextPanel(String text) {
        JPanel panel = new JPanel(false);
        JLabel filler = new JLabel(text);
        filler.setHorizontalAlignment(JLabel.CENTER);
        panel.setLayout(new GridLayout(1, 1));
        panel.add(filler);
        return panel;
    }
/**
 *<br>方法说明：获得图片
 *<br>输入参数：String path 图片的路径
 *<br>返回类型：ImageIcon 图片对象
 */
    protected static ImageIcon createImageIcon(String path) {
        java.net.URL imgURL = TabbedPaneDemo.class.getResource(path);
        if (imgURL != null) {
            return new ImageIcon(imgURL);
        } else {
            System.err.println("Couldn't find file: " + path);
            return null;
        }
    }

    public static void main(String[] args) {
        //使用Swing窗体描述
        JFrame.setDefaultLookAndFeelDecorated(true);

        //创建窗体
        JFrame frame = new JFrame("TabbedPaneDemo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().add(new TabbedPaneDemo(),
                                 BorderLayout.CENTER);

        //显示窗体
        frame.setSize(400, 200);
        frame.setVisible(true);
    }
}