java卡片布局管理实例

卡片布局实例如下:

package yjh.gui;

import java.awt.CardLayout;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class CardLayoutDemo extends JFrame implements ActionListener {
    JButton jb1, jb2, jb3;
    JPanel jp1, jp2, jp3, jp4, jp5;
    CardLayout c1;

    public CardLayoutDemo() {

        jb1 = new JButton("卡片1");
        jb1.addActionListener(this);
        jb2 = new JButton("卡片2");
        jb2.addActionListener(this);
        jb3 = new JButton("卡片3");
        jb3.addActionListener(this);

        c1 = new CardLayout();
        jp1 = new JPanel(c1);

        // 创建三个JPanel
        jp3 = new JPanel();
        jp3.add(new JLabel("卡片1"));
        jp4 = new JPanel();
        jp4.add(new JLabel("卡片2"));
        jp5 = new JPanel();
        jp5.add(new JLabel("卡片3"));

        // 把3个面板加入到卡片jp1中,默认显示第一个加入的卡片
        jp1.add(jp3, "0");
        jp1.add(jp4, "1");
        jp1.add(jp5, "2");

        jp2 = new JPanel();
        jp2.add(jb1);
        jp2.add(jb2);
        jp2.add(jb3);

        this.add(jp1, "Center");
        this.add(jp2, "South");

        this.setSize(400, 300);
        this.setTitle("卡片布局实例");
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.setLocation(300, 300);
        this.setVisible(true);

    }

    public static void main(String[] args) {
        new CardLayoutDemo();
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        if (e.getSource() == jb1) {
            c1.show(jp1, "0");
        } else if (e.getSource() == jb2) {
            c1.show(jp1, "1");
        } else if (e.getSource() == jb3) {
            c1.show(jp1, "2");
        }

    }

}