【例1】代码：
1 import java.awt.CardLayout;
2 import java.awt.GridLayout;
3 import java.awt.event.ActionEvent;
4 import java.awt.event.ActionListener;
5 import java.awt.event.WindowAdapter;
6 import java.awt.event.WindowEvent;
7
8 import javax.swing.JButton;
9 import javax.swing.JFrame;
10 import javax.swing.JLabel;
11 import javax.swing.JPanel;
12
13 public class TestCardLayout extends JFrame implements ActionListener {
14 CardLayout cl;
15 JPanel nav = new JPanel();
16 JPanel main = new JPanel();
17 JPanel jp1 = new JPanel();
18 JPanel jp2 = new JPanel();
19 JPanel jp3 = new JPanel();
20 JPanel jp4 = new JPanel();
21 JPanel jpFirst = new JPanel();
22 JPanel jpNext = new JPanel();
23 JPanel jpPrevious = new JPanel();
24 JPanel jpLast = new JPanel();
25 JLabel jl1 = new JLabel("第一张");
26 JLabel jl2 = new JLabel("第二张");
27 JLabel jl3 = new JLabel("第三张");
28 JLabel jl4 = new JLabel("第四张");
29 JButton first = new JButton("第一张");
30 JButton next = new JButton("下一张");
31 JButton previous = new JButton("上一张");
32 JButton last = new JButton("最后一张");
33
34 public static void main(String[] args) {
35 new TestCardLayout();
36 }
37
38 TestCardLayout() {
39 this.setTitle("TestCardLayout");
40 this.setSize(400, 300);
41 this.setLayout(new GridLayout(1, 2));
42 main.setLayout(new CardLayout());
43 this.setResizable(false);
44
45 nav.setLayout(new GridLayout(4,1));
46 jp1.add(first);
47 jp2.add(next);
48 jp3.add(previous);
49 jp4.add(last);
50 nav.add(jp1);
51 nav.add(jp2);
52 nav.add(jp3);
53 nav.add(jp4);
54 jpFirst.add(jl1);
55 jpNext.add(jl2);
56 jpPrevious.add(jl3);
57 jpLast.add(jl4);
58 main.add(jpFirst);
59 main.add(jpNext);
60 main.add(jpPrevious);
61 main.add(jpLast);
62
63 this.add(nav);
64 this.add(main);
65 first.addActionListener(this);
66 next.addActionListener(this);
67 previous.addActionListener(this);
68 last.addActionListener(this);
69 this.addWindowListener(new WindowAdapter() {
70 public void windowClosing(WindowEvent arg0) {
71 System.exit(0);
72 }
73 });
74 setVisible(true);
75 }
76
77 public void actionPerformed(ActionEvent e) {
78 cl = (CardLayout)main.getLayout();
79 cl.setHgap(0); cl.setVgap(0);
80
81 if(e.getSource() == first){
82 cl.first(main);
83 }else if(e.getSource() == next){
84 cl.next(main);
85 }else if(e.getSource() == previous){
86 cl.previous(main);
87 }else if(e.getSource() == last){
88 cl.last(main);
89 }
90
91
92 }
93
94 }
效果图：
【例2】代码：
1 import java.awt.BorderLayout;
2 import java.awt.CardLayout;
3 import java.awt.Color;
4 import java.awt.Dimension;
5 import java.awt.Font;
6 import java.awt.Graphics;
7 import java.awt.GridLayout;
8 import java.awt.Image;
9 import java.awt.Label;
10 import java.awt.event.ActionEvent;
11 import java.awt.event.ActionListener;
12 import java.awt.event.WindowAdapter;
13 import java.awt.event.WindowEvent;
14
15 import javax.swing.BorderFactory;
16 import javax.swing.ImageIcon;
17 import javax.swing.JFrame;
18 import javax.swing.JLabel;
19 import javax.swing.JMenu;
20 import javax.swing.JMenuBar;
21 import javax.swing.JMenuItem;
22 import javax.swing.JPanel;
23
24 public class UserMain extends JFrame implements ActionListener {
25 private String name;
26 public void setName(String name) {
27 this.name = name;
28 }
29
30 public String getName() {
31 return name;
32 }
33
34 private CardLayout cl;
35
36 public CardLayout getCl() {
37 return cl;
38 }
39
40 //所用面板
41 private JPanel main = new JPanel();
42 public JPanel getMain() {
43 return main;
44 }
45 JPanel barPanel = new JPanel();
46 JPanel userPanel = new JPanel();
47 JPanel jpDefault = new JPanel();
48 JPanel eastPanel = new JPanel();
49 JPanel southPanel = new JPanel();
50 JPanel jp1,jp2,jp3,jp4,jp5,jp6,jp7;
51
52 //所用菜单组件
53 JMenuBar mBar = new JMenuBar();
54 JMenu myOrder = new JMenu("我的订单");
55 JMenuItem oQuery = new JMenuItem("订单查询");
56 JMenuItem oAdd = new JMenuItem("添加订单");
57 JMenuItem oDel = new JMenuItem("取消订单");
58 JMenu uInfo = new JMenu("我的信息");
59 JMenuItem uQuery = new JMenuItem("查询");
60 JMenuItem uModify = new JMenuItem("修改");
61 JMenu hInfo = new JMenu("酒店信息");
62 JMenuItem hQuery = new JMenuItem("查询");
63 JMenu option = new JMenu("选择");
64 JMenuItem help = new JMenuItem("帮助");
65 JMenuItem back = new JMenuItem("注销");
66
67 public static void main(String[] args) {
68 new UserMain("KK");
69 }
70
71 UserMain(String name) {
72 this.name = name;
73
74 this.setTitle(name +"用户，欢迎您!");
75 this.setLayout(new BorderLayout());
76 this.setResizable(false);
77
78 //放置背景图片
79 ImageIcon background = new ImageIcon(LoginFrame.class.getClassLoader().getResource("images/Umain.jpg"));
80 JLabel bkLabel = new JLabel(background);
81 bkLabel.setBounds(0, 0,background.getIconWidth(), background.getIconHeight());
82 this.setSize(background.getIconWidth(), background.getIconHeight());
83 this.getLayeredPane().add(bkLabel,new Integer(Integer.MIN_VALUE));
84 JPanel ctPanel = (JPanel)this.getContentPane();
85 ctPanel.setOpaque(false);
86
87 //设置面板透明度，布局，和菜单组合
88 main.setOpaque(false);
89 jpDefault.setOpaque(false);
90 barPanel.setOpaque(false);
91 userPanel.setOpaque(false);
92 eastPanel.setOpaque(false);
93 southPanel.setOpaque(false);
94 main.setLayout(new CardLayout());
95 barPanel.setLayout(new BorderLayout());
96 //main.setBackground(new Color(255, 250 ,250));
97 uInfo.add(uQuery);
98 uInfo.add(uModify);
99 hInfo.add(hQuery);
100 myOrder.add(oQuery);
101 myOrder.add(oAdd);
102 myOrder.add(oDel);
103 option.add(help);
104 option.add(back);
105 mBar.add(uInfo);
106 mBar.add(hInfo);
107 mBar.add(myOrder);
108 mBar.add(option);
109 mBar.setOpaque(false);
110 barPanel.add(mBar,BorderLayout.EAST);
111
112 //设置标签样式，面板大小等
113 uInfo.setForeground(Color.WHITE);
114 hInfo.setForeground(Color.WHITE);
115 myOrder.setForeground(Color.WHITE);
116 option.setForeground(Color.WHITE);
117 myOrder.setFont(new java.awt.Font("微软楷体", Font.BOLD, 18));
118 uInfo.setFont(new java.awt.Font("微软楷体", Font.BOLD, 18));
119 hInfo.setFont(new java.awt.Font("微软楷体", Font.BOLD, 18));
120 option.setFont(new java.awt.Font("微软楷体", Font.BOLD, 18));
121 myOrder.setPreferredSize(new Dimension(120,20));
122 uInfo.setPreferredSize(new Dimension(150,20));
123 hInfo.setPreferredSize(new Dimension(150,20));
124 option.setPreferredSize(new Dimension(80,20));
125 barPanel.setPreferredSize(new Dimension(940,158));
126 userPanel.setPreferredSize(new Dimension(380,400));
127 eastPanel.setPreferredSize(new Dimension(60,400));
128 southPanel.setPreferredSize(new Dimension(940,50));
129 mBar.setBorder(BorderFactory.createEmptyBorder());
130
131
132 main.add(jpDefault);
133 this.add(barPanel,BorderLayout.NORTH);
134 this.add(userPanel,BorderLayout.WEST);
135 this.add(main,BorderLayout.CENTER);
136 this.add(eastPanel,BorderLayout.EAST);
137 this.add(southPanel,BorderLayout.SOUTH);
138 this.pack();
139
140 oQuery.addActionListener(this);
141 oAdd.addActionListener(this);
142 oDel.addActionListener(this);
143 uQuery.addActionListener(this);
144 uModify.addActionListener(this);
145 hQuery.addActionListener(this);
146 help.addActionListener(this);
147 back.addActionListener(this);
148 this.addWindowListener(new WindowAdapter() {
149 public void windowClosing(WindowEvent arg0) {
150 System.exit(0);
151 }
152 });
153 setVisible(true);
154 }
155
156 public void actionPerformed(ActionEvent e) {
157 cl = (CardLayout)main.getLayout();
158 cl.setHgap(0); cl.setVgap(0);
159
160 if(e.getSource() == uQuery){
161 jp1 = (JPanel)new UserCard("用户查询",this);
162 main.add("用户查询",jp1);
163 cl.show(main,"用户查询");
164 }else if(e.getSource() == uModify){
165 jp2 = (JPanel)new UserCard("用户修改",this);
166 main.add("用户修改",jp2);
167 cl.show(main,"用户修改");
168 }else if(e.getSource() == hQuery) {
169 jp3 = (JPanel)new UserCard("酒店查询",this);
170 main.add("酒店查询",jp3);
171 cl.show(main,"酒店查询");
172 }else if(e.getSource() == oQuery) {
173 jp4 = (JPanel)new UserCard("订单查询",this);
174 main.add("订单查询",jp4);
175 cl.show(main, "订单查询");
176 }else if(e.getSource() == oAdd) {
177 jp5 = (JPanel)new UserCard("订单添加",this);
178 main.add("订单添加",jp5);
179 cl.show(main, "订单添加");
180 }else if(e.getSource() == oDel) {
181 jp6 = (JPanel)new UserCard("订单删除",this);
182 main.add("订单删除",jp6);
183 cl.show(main, "订单删除");
184 }else if (e.getSource() == help) {
185 System.out.println("hhhh");
186 jp7 = (JPanel)new UserCard("帮助",this);
187 main.add("帮助",jp7);
188 cl.show(main,"帮助");
189 }else if (e.getSource() == back) {
190 this.setVisible(false);
191 new LoginFrame();
192 }
193
194 }
195
196 }
通过show()方法显示指定“卡片”，不同”卡片”指向继承JPanel的不同类。
效果图：
因为是Java初学者，窗体的很多布局不是很了解，为了让窗体看上去好看，只有硬塞一张处理过的图片了，嘿嘿--
时间： 2024-09-29 01:45:15