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40
41 import java.awt.*;
42 import java.awt.event.*;
43 import java.applet.Applet  ;
44
45 class CardPanel extends Panel {
46 ActionListener listener;
47
48 Panel create(LayoutManager layout) {
49 Button b = null;
50 Panel p = new Panel();
51
52 p.setLayout(layout);
53
54 b = new Button("one");
55 b.addActionListener(listener);
56 p.add("North", b);
57
58 b = new Button("two");
59 b.addActionListener(listener);
60 p.add("West", b);
61
62 b = new Button("three");
63 b.addActionListener(listener);
64 p.add("South", b);
65
66 b = new Button("four");
67 b.addActionListener(listener);
68 p.add("East", b);
69
70 b = new Button("five");
71 b.addActionListener(listener);
72 p.add("Center", b);
73
74 b = new Button("six");
75 b.addActionListener(listener);
76 p.add("Center", b);
77
78 return p;
79 }
80
81 CardPanel(ActionListener actionListener) {
82 listener = actionListener;
83 setLayout(new CardLayout());
84 add("one", create(new FlowLayout()));
85 add("two", create(new BorderLayout()));
86 add("three", create(new GridLayout(2, 2)));
87 add("four", create(new BorderLayout(10, 10)));
88 add("five", create(new FlowLayout(FlowLayout.LEFT, 10, 10)));
89 add("six", create(new GridLayout(2, 2, 10, 10)));
90 }
91
92 public Dimension getPreferredSize() {
93 return new Dimension(200, 100);
94 }
95 }
96
97 public class CardTest extends Applet
98 implements ActionListener,
99 ItemListener {
100 CardPanel cards;
101
102 public CardTest() {
103 setLayout(new BorderLayout());
104 add("Center", cards = new CardPanel(this));
105 Panel p = new Panel();
106 p.setLayout(new FlowLayout());
107 add("South", p);
108
109 Button b = new Button("first");
110 b.addActionListener(this);
111 p.add(b);
112
113 b = new Button("next");
114 b.addActionListener(this);
115 p.add(b);
116
117 b = new Button("previous");
118 b.addActionListener(this);
119 p.add(b);
120
121 b = new Button("last");
122 b.addActionListener(this);
123 p.add(b);
124
125 Choice c = new Choice();
126 c.addItem("one");
127 c.addItem("two");
128 c.addItem("three");
129 c.addItem("four");
130 c.addItem("five");
131 c.addItem("six");
132 c.addItemListener(this);
133 p.add(c);
134 }
135
136 public void itemStateChanged(ItemEvent e) {
137 ((CardLayout)cards.getLayout()).show(cards,
138 (String )(e.getItem()));
139 }
140
141 public void actionPerformed(ActionEvent e) {
142 String arg = e.getActionCommand();
143
144 if ("first".equals(arg)) {
145 ((CardLayout)cards.getLayout()).first(cards);
146 } else if ("next".equals(arg)) {
147 ((CardLayout)cards.getLayout()).next(cards);
148 } else if ("previous".equals(arg)) {
149 ((CardLayout)cards.getLayout()).previous(cards);
150 } else if ("last".equals(arg)) {
151 ((CardLayout)cards.getLayout()).last(cards);
152 } else {
153 ((CardLayout)cards.getLayout()).show(cards,(String )arg);
154 }
155 }
156
157 public static void main(String args[]) {
158 Frame f = new Frame("CardTest");
159 CardTest cardTest = new CardTest();
160 cardTest.init();
161 cardTest.start();
162
163 f.add("Center", cardTest);
164 f.setSize(300, 300);
165 f.show();
166 }
167
168 public String getAppletInfo() {
169 return "Demonstrates the different types of layout managers.";
170 }
171 }
172
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Java API By Example, From Geeks To Geeks.