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import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

public class CardLayoutDemo extends JFrame implements ActionListener

{

public static final int WIDTH = 300;

public static final int HEIGHT = 200;

private CardLayout dealer;

private JPanel deckPanel;

public CardLayoutDemo( )

{

setSize(WIDTH, HEIGHT);

addWindowListener(new WindowDestroyer( ));

setTitle("CardLayout Demonstration");

Container contentPane = getContentPane( );

contentPane.setLayout(new BorderLayout( ));

deckPanel = new JPanel( );

dealer = new CardLayout( );

deckPanel.setLayout(dealer);

JPanel startCardPanel = new JPanel( );

startCardPanel.setLayout(new FlowLayout( ));

startCardPanel.setBackground(Color.LIGHT_GRAY);

JLabel startLabel = new JLabel("Hello");

startCardPanel.add(startLabel);

deckPanel.add("start", startCardPanel);

JPanel greenCardPanel = new JPanel( );

greenCardPanel.setLayout(new FlowLayout( ));

greenCardPanel.setBackground(Color.GREEN);

JLabel goLabel = new JLabel("Go");

greenCardPanel.add(goLabel);

deckPanel.add("green", greenCardPanel);

JPanel redCardPanel = new JPanel( );

redCardPanel.setLayout(new FlowLayout( ));

redCardPanel.setBackground(Color.RED);

JLabel stopLabel = new JLabel("Stop");

redCardPanel.add(stopLabel);

deckPanel.add("red", redCardPanel);

contentPane.add(deckPanel, BorderLayout.CENTER);

JPanel buttonPanel = new JPanel( );

buttonPanel.setBackground(Color.WHITE);

buttonPanel.setLayout(new FlowLayout( ));

JButton stopButton = new JButton("Red");

stopButton.addActionListener(this);

buttonPanel.add(stopButton);

JButton goButton = new JButton("Green");

goButton.addActionListener(this);

buttonPanel.add(goButton);

JButton resetButton = new JButton("Reset");

resetButton.addActionListener(this);

buttonPanel.add(resetButton);

contentPane.add(buttonPanel, BorderLayout.SOUTH);

dealer.first(deckPanel);//Optional

}

public void actionPerformed(ActionEvent e)

{

String actionCommand = e.getActionCommand( );

if (actionCommand.equals("Red"))

dealer.show(deckPanel, "red");

else if (actionCommand.equals("Green"))

dealer.show(deckPanel, "green");

else if (actionCommand.equals("Reset"))

dealer.show(deckPanel, "start");

else

System.out.println("Error in CardLayout Demo.");

}