learning java AWT 布局管理器CardLayout

桃扇骨 2021-11-15 13:34 311阅读 0赞

import javax.swing.*;
    import java.awt.*;
    import java.awt.event.ActionListener;
    
    public class CardLayoutTest {
        Frame f = new Frame("cardlayout test");
        Panel p1 = new Panel();
        String[] names = {
        "上一张","下一张","第一张","最后一张","第三张"};
    
        public void init(){
            final var c =  new CardLayout();
            p1.setLayout(c);
            for(var i = 0; i < names.length; i++){
                p1.add(names[i], new JButton(names[i]));
            }
            var p  = new Panel();
            ActionListener listener = e -> {
                switch (e.getActionCommand()){
                    case "上一张":
                        System.out.println("previous");
                        c.previous(p1);
                        break;
                    case "下一张":
                        c.next(p1);
                        System.out.println("next");
                        break;
                    case "第一张":
                        c.first(p1);
                        System.out.println("first");
                        break;
                    case "最后一张":
                        c.last(p1);
                        System.out.println("last");
                        break;
                    case "第三张":
                        c.show(p1, "第三张");
                        System.out.println("third");
                        break;
                }
            };
    
            var previous = new JButton("上一张");
            previous.addActionListener(listener);
    
            var next = new JButton("下一张");
            next.addActionListener(listener);
    
            var first = new JButton("第一张");
            first.addActionListener(listener);
    
            var last = new JButton("最后一张");
            last.addActionListener(listener);
    
            var third = new JButton("第三张");
            third.addActionListener(listener);
    
            p.add(previous);
            p.add(next);
            p.add(first);
            p.add(last);
            p.add(third);
    
            f.add(p1);
            f.add(p, BorderLayout.NORTH);
            f.setLocation(100,100);
            f.setBounds(100,100,300,500);
            f.pack();
            f.setVisible(true);
    
        }
    
        public static void main(String[] args) {
            new CardLayoutTest().init();
        }
    
    }

output:

![814849-20190730150558903-1518813694.png][]

转载于:https://www.cnblogs.com/lianghong881018/p/11270140.html

[814849-20190730150558903-1518813694.png]: /images/20211115/ce5a22f3d7b542bc82e254cb963ec19e.png