import java.awt.BorderLayout; import java.awt.EventQueue; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.border.EmptyBorder; import javax.swing.JLabel; import javax.swing.JButton; import javax.swing.SwingConstants; import java.awt.event.ActionListener; import java.awt.event.ActionEvent; import java.awt.FlowLayout; import java.awt.GridLayout; public class RockPaperScissorsGUI extends JFrame { private JPanel contentPane; private JPanel humanDisplay = new JPanel(); private JPanel computerDisplay = new JPanel(); private JLabel winnerAnnouncement = new JLabel(\"Winner Shown Here\"); private JPanel choicePanel = new JPanel(); private RPSChoice rock = RPSChoice.ROCK; private RPSChoice paper = RPSChoice.PAPER; private RPSChoice scissors = RPSChoice.SCISSORS; private RPSChoice randChoice; private final JPanel humOrCompPanel = new JPanel(); private final JLabel lblHuman = new JLabel(\"Human\"); private final JLabel lblComputer = new JLabel(\"Computer\"); private JButton btnScissors = new JButton(\"Scissors\"); private JButton btnPaper = new JButton(\"Paper\"); private JButton btnRock = new JButton(\"Rock\"); /** * Launch the application. */ public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { public void run() { try { RockPaperScissorsGUI frame = new RockPaperScissorsGUI(); frame.setVisible(true); } catch (Exception e) { e.printStackTrace(); } } }); } /** * Create the frame. */ public RockPaperScissorsGUI() { setTitle(\"Rock, Paper, Scissors\"); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setBounds(100, 100, 544, 366); contentPane = new JPanel(); contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); contentPane.setLayout(new BorderLayout(0, 0)); setContentPane(contentPane); JPanel choicePanel = addPanels(); addButtons(choicePanel, rock, btnRock); addButtons(choicePanel, paper, btnPaper); addButtons(choicePanel, scissors, btnScissors); } private JPanel addPanels() { contentPane.add(humanDisplay, BorderLayout.WEST); humanDisplay.setLayout(new FlowLayout(FlowLayout.CENTER, 5, 5)); contentPane.add(computerDisplay, BorderLayout.EAST); winnerAnnouncement.setHorizontalAlignment(SwingConstants.CENTER); contentPane.add(winnerAnnouncement, BorderLayout.CENTER); contentPane.add(choicePanel, BorderLayout.NORTH); contentPane.add(humOrCompPanel, BorderLayout.SOUTH); humOrCompPanel.setLayout(new GridLayout(1, 0, 0, 0)); lblHuman.setHorizontalAlignment(SwingConstants.CENTER); humOrCompPanel.add(lblHuman); lblComputer.setHorizontalAlignment(SwingConstants.CENTER); humOrCompPanel.add(lblComputer); return choicePanel; } private void addButtons(JPanel choicePanel, RPSChoice choice, JButton button ){ button.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent arg0) { humanDisplay.removeAll(); humanDisplay.add(new JLabel(choice.getImageIcon())); computerDisplay.removeAll(); randChoice = RPSChoice.randomChoice(); computerDisplay.add(new JLabel(randChoice.getImageIcon())); choicePanel.repaint(.

1. import java.awt.BorderLayout; import java.awt.EventQueue; import javax.swing.JFrame;
import javax.swing.JPanel; import javax.swing.border.EmptyBorder; import
javax.swing.JLabel; import javax.swing.JButton; import javax.swing.SwingConstants;
import java.awt.event.ActionListener; import java.awt.event.ActionEvent; import
java.awt.FlowLayout; import java.awt.GridLayout; public class RockPaperScissorsGUI
extends JFrame { private JPanel contentPane; private JPanel humanDisplay = new
JPanel(); private JPanel computerDisplay = new JPanel(); private JLabel
winnerAnnouncement = new JLabel("Winner Shown Here"); private JPanel choicePanel =
new JPanel(); private RPSChoice rock = RPSChoice.ROCK; private RPSChoice paper
= RPSChoice.PAPER; private RPSChoice scissors = RPSChoice.SCISSORS; private
RPSChoice randChoice; private final JPanel humOrCompPanel = new JPanel();
private final JLabel lblHuman = new JLabel("Human"); private final JLabel lblComputer
= new JLabel("Computer"); private JButton btnScissors = new JButton("Scissors");
private JButton btnPaper = new JButton("Paper"); private JButton btnRock = new
JButton("Rock"); /** * Launch the application. */ public static void
main(String[] args) { EventQueue.invokeLater(new Runnable() { public void
run() { try { RockPaperScissorsGUI frame = new
RockPaperScissorsGUI(); frame.setVisible(true); } catch (Exception
e) { e.printStackTrace(); } } }); } /**
* Create the frame. */ public RockPaperScissorsGUI() { setTitle("Rock,
Paper, Scissors"); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 544, 366); contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); contentPane.setLayout(new
BorderLayout(0, 0)); setContentPane(contentPane); JPanel choicePanel =
addPanels(); addButtons(choicePanel, rock, btnRock); addButtons(choicePanel,
paper, btnPaper); addButtons(choicePanel, scissors, btnScissors); } private
JPanel addPanels() { contentPane.add(humanDisplay, BorderLayout.WEST);
humanDisplay.setLayout(new FlowLayout(FlowLayout.CENTER, 5, 5));
contentPane.add(computerDisplay, BorderLayout.EAST);
winnerAnnouncement.setHorizontalAlignment(SwingConstants.CENTER);
contentPane.add(winnerAnnouncement, BorderLayout.CENTER);
contentPane.add(choicePanel, BorderLayout.NORTH);
contentPane.add(humOrCompPanel, BorderLayout.SOUTH);
humOrCompPanel.setLayout(new GridLayout(1, 0, 0, 0));
lblHuman.setHorizontalAlignment(SwingConstants.CENTER);
humOrCompPanel.add(lblHuman);

2. lblComputer.setHorizontalAlignment(SwingConstants.CENTER);
humOrCompPanel.add(lblComputer); return choicePanel; } private void
addButtons(JPanel choicePanel, RPSChoice choice, JButton button ){
button.addActionListener(new ActionListener() { public void
actionPerformed(ActionEvent arg0) { humanDisplay.removeAll();
humanDisplay.add(new JLabel(choice.getImageIcon()));
computerDisplay.removeAll(); randChoice = RPSChoice.randomChoice();
computerDisplay.add(new JLabel(randChoice.getImageIcon()));
choicePanel.repaint(); choicePanel.revalidate(); } });
choicePanel.add(button); } }
Solution
import java.awt.BorderLayout; import java.awt.EventQueue; import javax.swing.JFrame;
import javax.swing.JPanel; import javax.swing.border.EmptyBorder; import
javax.swing.JLabel; import javax.swing.JButton; import javax.swing.SwingConstants;
import java.awt.event.ActionListener; import java.awt.event.ActionEvent; import
java.awt.FlowLayout; import java.awt.GridLayout; public class RockPaperScissorsGUI
extends JFrame { private JPanel contentPane; private JPanel humanDisplay = new
JPanel(); private JPanel computerDisplay = new JPanel(); private JLabel
winnerAnnouncement = new JLabel("Winner Shown Here"); private JPanel choicePanel =
new JPanel(); private RPSChoice rock = RPSChoice.ROCK; private RPSChoice paper
= RPSChoice.PAPER; private RPSChoice scissors = RPSChoice.SCISSORS; private
RPSChoice randChoice; private final JPanel humOrCompPanel = new JPanel();
private final JLabel lblHuman = new JLabel("Human"); private final JLabel lblComputer
= new JLabel("Computer"); private JButton btnScissors = new JButton("Scissors");
private JButton btnPaper = new JButton("Paper"); private JButton btnRock = new
JButton("Rock"); /** * Launch the application. */ public static void
main(String[] args) { EventQueue.invokeLater(new Runnable() { public void
run() { try { RockPaperScissorsGUI frame = new
RockPaperScissorsGUI(); frame.setVisible(true); } catch (Exception
e) { e.printStackTrace(); } } }); } /**
* Create the frame. */ public RockPaperScissorsGUI() { setTitle("Rock,
Paper, Scissors"); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 544, 366); contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); contentPane.setLayout(new
BorderLayout(0, 0)); setContentPane(contentPane); JPanel choicePanel =

3. addPanels(); addButtons(choicePanel, rock, btnRock); addButtons(choicePanel,
paper, btnPaper); addButtons(choicePanel, scissors, btnScissors); } private
JPanel addPanels() { contentPane.add(humanDisplay, BorderLayout.WEST);
humanDisplay.setLayout(new FlowLayout(FlowLayout.CENTER, 5, 5));
contentPane.add(computerDisplay, BorderLayout.EAST);
winnerAnnouncement.setHorizontalAlignment(SwingConstants.CENTER);
contentPane.add(winnerAnnouncement, BorderLayout.CENTER);
contentPane.add(choicePanel, BorderLayout.NORTH);
contentPane.add(humOrCompPanel, BorderLayout.SOUTH);
humOrCompPanel.setLayout(new GridLayout(1, 0, 0, 0));
lblHuman.setHorizontalAlignment(SwingConstants.CENTER);
humOrCompPanel.add(lblHuman);
lblComputer.setHorizontalAlignment(SwingConstants.CENTER);
humOrCompPanel.add(lblComputer); return choicePanel; } private void
addButtons(JPanel choicePanel, RPSChoice choice, JButton button ){
button.addActionListener(new ActionListener() { public void
actionPerformed(ActionEvent arg0) { humanDisplay.removeAll();
humanDisplay.add(new JLabel(choice.getImageIcon()));
computerDisplay.removeAll(); randChoice = RPSChoice.randomChoice();
computerDisplay.add(new JLabel(randChoice.getImageIcon()));
choicePanel.repaint(); choicePanel.revalidate(); } });
choicePanel.add(button); } }