¡Urgente! Tarea de práctica de diseño de programación, ¡los expertos pueden ayudar!

Espero que esto pueda resultarle útil

import javax.swing.*;

import java.awt.*; java.awt.event.*;

la clase pública CardLayoutDemo extiende JFrame implementa ActionListener

{

public static final int WIDTH = 300;

public static final int HEIGHT = 200;

distribuidor CardLayout privado;

deckPanel JPanel privado;

CardLayoutDemo público ( )

{

setSize(ANCHO, ALTO);

addWindowListener(new WindowDestroyer( ));

setTitle("Demostración de CardLayout");

Contenedor contentPane = getContentPane( );

contentPane.setLayout(new BorderLayout( ));

deckPanel = new JPanel( );

dealer = nuevo CardLayout( );

deckPanel.setLayout(distribuidor);

JPanel startCardPanel = nuevo JPanel( );

startCardPanel.setLayout(nuevo FlowLayout( ));

startCardPanel.setBackground(Color.LIGHT_GRAY);

JLabel startLabel = new JLabel("Hola");

startCardPanel.add(startLabel);

p>

deckPanel.add("start", startCardPanel);

JPanel greenCardPanel = new JPanel( );

greenCardPanel.setLayout(new FlowLayout( ));

greenCardPanel.setBackground(Color.GREEN);

JLabel goLabel = new JLabel("Ir");

greenCardPanel.add( goLabel);

deckPanel.add("green", greenCardPanel);

JPanel redCardPanel = nuevo JPan

el( );

redCardPanel.setLayout(new FlowLayout());

redCardPanel.setBackground(Color.RED);

JLabel stopLabel = new JLabel( "Detener");

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("Rojo");

stopButton.addActionListener(this);

buttonPanel.add(stopButton);

JButton goButton = new JButton("Verde");

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);//Opcional

}

public void actionPerformed(ActionEvent e)

{

String actionCommand = e.getActionCommand( );

if (actionCommand.equals("Red"))

dealer.show (deckPanel, "rojo");

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

dealer.show(deckPanel, "verde");

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

dealer.show(deckPanel, "start");

else

System.out.println("Error en la demostración de CardLayout.");

}