Source Code : CardLayout Demo

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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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