Order a Pizza!

      import java.awt.*;
      import java.awt.event.*;
      import javax.swing.*;
      
      public class PizzaOrder {
        public static void main(String[] args) {
          OrderFrame frame = new OrderFrame(); 
        }
      }
      
      
      class OrderFrame extends JFrame {
        public OrderFrame() {
          applySettings();
          addComponents(); 
          setListeners();
      
          ...
        }
      
        private void applySettings() {
          ...
        }
      
        private void addComponents() {
          ...
        }
      
        private void setListeners() {
          ...
        }	    
      
        private void updateOrder() {
          ...
        }
      
        // Declare Components
        ...

        private double totalCost = 0; 
        private String orderString = "";
      
        private String[] size = new String[] {"Small ($8.50)", "Medium ($10.50)", "Large ($12.50)"};
        private String[] toppings = new String[] {"onions ($1.25)", "black olives ($1.50)", "pineapple ($2.00)", "mushroom ($2.25)"};
      }
    

Description and Objective

• This app calculates the price of a pizza based on its size and toppings as seen in the figure above. The price and the order info should be displayed immediately after any modification.

Things to Do

• Use the above code as a template.
• Changing settings:
  • Set the window title
  • Set the background color
  • Set the layout to BorderLayout
• Adding Components:
  • Create a JPanel to contain labels and components for size selection. The panel should look like the top portion of the figure.
  • Create a JPanel to contain labels and components for topping selection. The panel should look like the top portion of the figure.
  • Create a JPanel to contain labels and components for order info. The panel should look like the top portion of the figure.
• Adding Listeners:
  • When checked all radio buttons and checkboxes should behave the same, therefore you can instantiate a single listener object that would call the updateOrder function and change the values on the order info portion of the frame.
  • Once instantiated you can add this as the listener to each component.
• updateOrder function should update the totalCost and orderString values based on the selections. The totalCost is tha cost of the pizza and the orderString is a shorthand description of the order (see bottom portion of the figure.