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import java.awt.*;

import java.awt.event.*;

import java.net.URL;

import javax.swing.*;

public class KeyListenerPractice extends JPanel implements MouseListener {

JButton b;

public KeyListenerPractice() {

setLayout(new BorderLayout());

setBackground(Color.gray);

URL path = getClass().getResource("king_of_diamonds.jpg");

final ImageIcon image = new ImageIcon (path);

final JLabel card = new JLabel(image);

URL path2 = getClass().getResource("back.jpg");

final ImageIcon image2 = new ImageIcon (path2);

final JLabel card2 = new JLabel(image2);

add (card, BorderLayout.CENTER);

add (card2, BorderLayout.CENTER);

card.addMouseListener (new MouseAdapter() {

public void mousePressed(MouseEvent e) {

card.setIcon(image2);

}

});

card2.addMouseListener(new MouseAdapter() {

public void mousePressed(MouseEvent e) {

card2.setIcon(image);

}

});

}

@Override

public void mouseClicked(MouseEvent arg0) {}

@Override

public void mouseEntered(MouseEvent arg0) {}

@Override

public void mouseExited(MouseEvent arg0) {}

@Override

public void mousePressed(MouseEvent arg0) {}

@Override

public void mouseReleased(MouseEvent arg0) {}

}