博客

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

public class DemoCardLayout {
    public static void main(String[] args) {
        JFrame jFrame = new JFrame("CardLayout窗体");
        Container container = jFrame.getContentPane();

        JButton button1 = new JButton("员工信息");

        JButton button2 = new JButton("员工考勤");
        JButton button3 = new JButton("支出");

        CardLayout cardLayout = new CardLayout();
        //用于显示
        JPanel jPanel = new JPanel();
        JPanel jPanelButton = new JPanel();
        //设置显示面板布局为卡片布局
        jPanel.setLayout(cardLayout);
        //向JPanel添加FlowLayout布局管理器，将组件间的横向和纵向间隙都设置为20像素
        //FlowLayout(int align, int hgap,int vgap)组件对齐方式以及横纵隔距离
        jPanelButton.setLayout(new FlowLayout(FlowLayout.LEADING,20,20));
        //设置按钮面板背景色
        jPanelButton.setBackground(Color.cyan);
        //设置显示面板和按钮面板的布局位置
        container.add(jPanel,BorderLayout.CENTER);
        container.add(jPanelButton,BorderLayout.NORTH);
        //把按钮组件放进 jPanelButton面板
        jPanelButton.add(button1);
        jPanelButton.add(button2);
        jPanelButton.add(button3);

        //创建用于显示的面板
        JPanel jPanel1 = new JPanel();
        JPanel jPanel2 = new JPanel();
        JPanel jPanel3 = new JPanel();
        //在每个字面板插入标签
        jPanel1.add(new JLabel("第一个card"));
        jPanel2.add(new JLabel("第二个card"));
        jPanel3.add(new JLabel("第三个card"));


        //把三个字面板组件放进显示面板
        jPanel.add(jPanel1,"1");
        jPanel.add(jPanel2,"2");
        jPanel.add(jPanel3,"3");

        //设置显示面板布局为卡片布局
        button1.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                cardLayout.previous(jPanel);
            }
        });
        button2.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                cardLayout.show(jPanel,"2");
            }
        });
        button3.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                cardLayout.next(jPanel);
            }
        });



        jFrame.setSize(1200,700);
        jFrame.setVisible(true);
        jFrame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }
}