CardLayout Demo
import java.awt.BorderLayout;
import java.awt.CardLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.BorderFactory;
import javax.swing.BoxLayout;
import javax.swing.ButtonGroup;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
public class CardLayoutDemo implements ActionListener {
JPanel cards; //a panel that uses CardLayout
final static String[] strings =
{"Component 1",
"Component 2 is so long-winded it makes the container wide",
"Component 3"};
private static JComponent createComponent(String s) {
JLabel l = new JLabel(s);
l.setBorder(BorderFactory.createMatteBorder(5,5,5,5,
Color.DARK_GRAY));
l.setHorizontalAlignment(JLabel.CENTER);
return l;
}
public void addCardsToPane(Container pane) {
JRadioButton[] rb = new JRadioButton[strings.length];
ButtonGroup group = new ButtonGroup();
JPanel buttons = new JPanel();
buttons.setLayout(new BoxLayout(buttons,
BoxLayout.PAGE_AXIS));
for (int i= 0; i < strings.length; i++) {
rb[i] = new JRadioButton("Show component #" + (i+1));
rb[i].setActionCommand(String.valueOf(i));
rb[i].addActionListener(this);
group.add(rb[i]);
buttons.add(rb[i]);
}
rb[0].setSelected(true);
//Create the panel that contains the "cards".
cards = new JPanel(new CardLayout());
for (int i = 0; i < strings.length; i++) {
cards.add(createComponent(strings[i]), String.valueOf(i));
}
pane.add(buttons, BorderLayout.NORTH);
pane.add(cards, BorderLayout.CENTER);
}
public void actionPerformed(ActionEvent evt) {
CardLayout cl = (CardLayout)(cards.getLayout());
cl.show(cards, (String)evt.getActionCommand());
}
public static void main(String[] args) {
JFrame.setDefaultLookAndFeelDecorated(true);
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
CardLayoutDemo demo = new CardLayoutDemo();
demo.addCardsToPane(frame.getContentPane());
frame.pack();
frame.setVisible(true);
}
}
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