cardlayoutdemo.java

精通JBuilder2006 源代码 精通JBuilder2006 源代码

package chapter6.layout;

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;

public class CardLayoutDemo extends JFrame implements ActionListener {
    boolean one = true;
    JPanel p3;
    public CardLayoutDemo() {
        JPanel p1, p2, p4;
        Container contentPane = this.getContentPane();
        contentPane.setLayout(new GridLayout(2, 1));
        p1 = new JPanel(); //card1
        p1.setLayout(new GridLayout(1, 1));
        p1.add(new Button("one"));
        p2 = new JPanel(); //card2
        p2.setLayout(new GridLayout(1, 1));
        p2.add(new Button("two"));
        p3 = new JPanel(new CardLayout()); //放置前面的两个panel
        p3.add("one", p1); //one 为p1的标识符
        p3.add("two", p2);
        ((CardLayout) p3.getLayout()).show(p3, "one"); //设置默认显示的卡片
        contentPane.add(p3);
        p4 = new JPanel();
        JButton jButton1 = new JButton("Next");
        jButton1.addActionListener(this);
        p4.add(jButton1);
        contentPane.add(p4);
        this.setTitle("CardLayoutDemo");
        this.setSize(400, 200);
        this.setLocation(400, 400);
        this.setVisible(true);
    }

    public void actionPerformed(ActionEvent event) {
        if (one == true) {
            ((CardLayout) p3.getLayout()).show(p3, "two");
            one = false;
        } else {
            ((CardLayout) p3.getLayout()).show(p3, "one");
            one = true;
        }
    }

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