Question

This project is designed to help you practice Graphical User Interfaces (GUI) using Java. Design and write a class needed to simulate a pizza shop ordering system GUI. Your ordering system should allow the user to select whether the order is to be delivered or picked up, the items ordered from the menu and the name of the person making the order. When the user presses the place order button, the display should show the delivery status, the items ordered, and the price (cheese pizza $10, pepperoni pizza $11, supreme pizza $13, and vegetarian pizza $12)

Answer 1

import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JTextArea;
import javax.swing.JTextField;

public class PizzaOrderingApp {
  
private static JFrame mainFrame;
private static JPanel mainPanel, namePanel, statusPanel, ordersPanel, submitPanel, resultPanel;
private static JLabel nameLabel, ordersLabel;
private static JTextField nameField;
private static ButtonGroup grp;
private static JRadioButton delivered, picked;
private static JCheckBox cheesePizza, pepperoniPizza, supremePizza, vegeterianPizza;
private static JButton submitButton;
private static JTextArea resultArea;
  
public static void main(String[] args)
{
init();
  
// action listener for submit button
submitButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
String name = "", status = "";
ArrayList<String> orders = new ArrayList<>();
int total = 0;
  
if(nameField.getText().equals(""))
{
JOptionPane.showMessageDialog(null, "Please enter your name!");
return;
}
name = nameField.getText().trim();
  
if(!delivered.isSelected() && !picked.isSelected())
{
JOptionPane.showMessageDialog(null, "Please select either of the options: delivered OR picked!");
return;
}
if(delivered.isSelected())
status = "delivered";
else
status = "picked up";
  
if(!cheesePizza.isSelected() && !pepperoniPizza.isSelected() && !supremePizza.isSelected()
&& !vegeterianPizza.isSelected())
{
JOptionPane.showMessageDialog(null, "Please check either of the pizzas!");
return;
}
if (cheesePizza.isSelected()) {
orders.add("Cheese Pizza - $10");
total += 10;
}

if (pepperoniPizza.isSelected()) {
orders.add("Pepperoni Pizza - $11");
total += 11;
}

if (supremePizza.isSelected()) {
orders.add("Supreme Pizza - $13");
total += 13;
}

if (vegeterianPizza.isSelected()) {
orders.add("Vegeterian Pizza - $12");
total += 12;
}

String result = "Name: " + name + "\n"
+ "Order Status: " + status + "\n"
+ "Orders:\n";
int i = 0;
for (String order : orders) {
result += ++i + ". " + order + "\n";
}
result += "------------------------------------\n"
+ "Total: $" + total;

resultArea.setText(result);
}
});
}
  
private static void init()
{
mainFrame = new JFrame("Pizza Shop");
mainPanel = new JPanel(new FlowLayout(FlowLayout.CENTER));
  
namePanel = new JPanel(new FlowLayout(FlowLayout.CENTER));
nameLabel = new JLabel("Your name: ");
nameField = new JTextField(20);
namePanel.add(nameLabel);
namePanel.add(nameField);
  
statusPanel = new JPanel(new FlowLayout(FlowLayout.CENTER));
grp = new ButtonGroup();
delivered = new JRadioButton("Delivered");
picked = new JRadioButton("Picked Up");
grp.add(delivered);
grp.add(picked);
statusPanel.add(delivered);
statusPanel.add(picked);
  
ordersPanel = new JPanel(new FlowLayout(FlowLayout.CENTER));
cheesePizza = new JCheckBox("Cheese Pizza - $10");
pepperoniPizza = new JCheckBox("Pepperoni Pizza - $11");
supremePizza = new JCheckBox("Supreme Pizza - $13");
vegeterianPizza = new JCheckBox("Vegeterian Pizza - $12");
ordersPanel.add(cheesePizza);
ordersPanel.add(pepperoniPizza);
ordersPanel.add(supremePizza);
ordersPanel.add(vegeterianPizza);
  
resultPanel = new JPanel(new FlowLayout(FlowLayout.CENTER));
ordersLabel = new JLabel("Your orders:\n");
resultArea = new JTextArea(7, 25);
resultPanel.add(ordersLabel);
resultPanel.add(resultArea);
  
submitPanel = new JPanel(new FlowLayout(FlowLayout.CENTER));
submitButton = new JButton("Submit");
submitPanel.add(submitButton);
  
mainPanel.add(namePanel);
mainPanel.add(statusPanel);
mainPanel.add(ordersPanel);
mainPanel.add(resultPanel);
mainPanel.add(submitPanel);
  
mainFrame.add(mainPanel);
mainFrame.setSize(650, 300);
mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
mainFrame.setLocationRelativeTo(null);
mainFrame.setResizable(false);
mainFrame.setVisible(true);
}
}

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