import javax.swing.*; import java.awt.*; import java.awt.event.*; /** The OrderC

Question

 import javax.swing.*; import java.awt.*; import java.awt.event.*;  /**    The OrderCalculatorGUI class creates the GUI for the    Brandi's Bagel House application. */  public class OrderCalculatorGUI extends JFrame {    private BagelPanel bagels;     // Bagel panel    private ToppingPanel toppings; // Topping panel    private CoffeePanel coffee;    // Coffee panel    private GreetingPanel banner;  // To display a greeting    private JPanel buttonPanel;    // To hold the buttons    private JButton calcButton;    // To calculate the cost    private JButton exitButton;    // To exit the application    private final double TAX_RATE = 0.06; // Sales tax rate     /**       Constructor    */     public OrderCalculatorGUI()    {       // Display a title.       setTitle("Order Calculator");        // Specify an action for the close button.       setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);        // Create a BorderLayout manager.       setLayout(new BorderLayout());        // Create the custom panels.       banner = new GreetingPanel();       bagels = new BagelPanel();       toppings = new ToppingPanel();       coffee = new CoffeePanel();        // Create the button panel.       buildButtonPanel();        // Add the components to the content pane.       add(banner, BorderLayout.NORTH);       add(bagels, BorderLayout.WEST);       add(toppings, BorderLayout.CENTER);       add(coffee, BorderLayout.EAST);       add(buttonPanel, BorderLayout.SOUTH);        // Pack the contents of the window and display it.       pack();       /*        * MAKE THE PANEL VISIBLE       */    }     /**       The buildButtonPanel method builds the button panel.    */     private void buildButtonPanel()    {       // Create a panel for the buttons.       buttonPanel = new JPanel();        // Create the buttons.       calcButton = new JButton("Calculate");       exitButton = new JButton("Exit");        // Register the action listeners.       calcButton.addActionListener(new CalcButtonListener());       exitButton.addActionListener(new ExitButtonListener());        // Add the buttons to the button panel.       buttonPanel.add(calcButton);       buttonPanel.add(exitButton);    }     /**       Private inner class that handles the event when       the user clicks the Calculate button.    */        /*     * Create your inner class that computes the total do     * Look to line 73 for your class name Here is body of the implemented     * method that you have to code.  Copy and paste this body into your class/method          * BEGINING OF COPY                 // Variables to hold the subtotal, tax, and total          double subtotal, tax, total;           // Calculate the subtotal.          subtotal = bagels.getBagelCost() +                      toppings.getToppingCost() +                     coffee.getCoffeeCost();           // Calculate the sales tax.          tax = subtotal * TAX_RATE;           // Calculate the total.          total = subtotal + tax;           // Display the charges.          JOptionPane.showMessageDialog(null,             String.format("Subtotal: $%,.2f " +                           "Tax: $%,.2f " +                           "Total: $%,.2f",                           subtotal, tax, total));                * END OF COPY    */     /**       Private inner class that handles the event when       the user clicks the Exit button.    */     /*     * Create your inner class that cause the entire program/system to EXIT (hint)     * Look to line 74 for your class name    */       } 

Explanation / Answer

===========Test.java==============

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

/**

The OrderCalculatorGUI class creates the GUI for the

Brandi's Bagel House application.

*/

class OrderCalculatorGUI extends JFrame

{

private BagelPanel bagels; // Bagel panel

private ToppingPanel toppings; // Topping panel

private CoffeePanel coffee; // Coffee panel

private GreetingPanel banner; // To display a greeting

private JPanel buttonPanel; // To hold the buttons

private JButton calcButton; // To calculate the cost

private JButton exitButton; // To exit the application

private final double TAX_RATE = 0.06; // Sales tax rate

/**

Constructor

*/

public OrderCalculatorGUI()

{

// Display a title.

setTitle("Order Calculator");

// Specify an action for the close button.

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

// Create a BorderLayout manager.

setLayout(new BorderLayout());

// Create the custom panels.

banner = new GreetingPanel();

bagels = new BagelPanel();

toppings = new ToppingPanel();

coffee = new CoffeePanel();

// Create the button panel.

buildButtonPanel();

// Add the components to the content pane.

add(banner, BorderLayout.NORTH);

add(bagels, BorderLayout.WEST);

add(toppings, BorderLayout.CENTER);

add(coffee, BorderLayout.EAST);

add(buttonPanel, BorderLayout.SOUTH);

// Pack the contents of the window and display it.

pack();

  

setVisible(true);

/*

* MAKE THE PANEL VISIBLE

*/

}

private class CalcButtonListener implements ActionListener

{

public void actionPerformed(ActionEvent ae)

{

// Variables to hold the subtotal, tax, and total

double subtotal, tax, total, st;

// Calculate the subtotal.

subtotal = bagels.getBagelCost() +

toppings.getToppingCost() +

coffee.getCoffeeCost();

// Calculate the sales tax.

tax = subtotal * TAX_RATE;

// Calculate the total.

total = subtotal + tax;

// Display the charges.

JOptionPane.showMessageDialog(null,

String.format("Subtotal: $%,.2f " +

"Tax: $%,.2f " +

"Total: $%,.2f",

subtotal, tax, total));

}

}

private class ExitButtonListener implements ActionListener

{

public void actionPerformed(ActionEvent ae)

{

System.exit(0);

}

}

/**

The buildButtonPanel method builds the button panel.

*/

private void buildButtonPanel()

{

// Create a panel for the buttons.

buttonPanel = new JPanel();

// Create the buttons.

calcButton = new JButton("Calculate");

exitButton = new JButton("Exit");

// Register the action listeners.

calcButton.addActionListener(new CalcButtonListener());

exitButton.addActionListener(new ExitButtonListener());

// Add the buttons to the button panel.

buttonPanel.add(calcButton);

buttonPanel.add(exitButton);

}

/**

Private inner class that handles the event when

the user clicks the Calculate button.

*/

/*

* Create your inner class that computes the total do

* Look to line 73 for your class name Here is body of the implemented

* method that you have to code. Copy and paste this body into your class/method

  

* BEGINING OF COPY

* END OF COPY

*/

/**

Private inner class that handles the event when

the user clicks the Exit button.

*/

/*

* Create your inner class that cause the entire program/system to EXIT (hint)

* Look to line 74 for your class name

*/

  

}

public class Test

{

public static void main(String[] args) {

System.out.println("main");

OrderCalculatorGUI ocg2=new OrderCalculatorGUI();

}

}

===========ToppingPanel.java==============

import java.awt.GridLayout;
import javax.swing.*;

public class ToppingPanel extends JPanel{
  
public final double CHEESE=0.50;
public final double honey=0.25;
public final double JELLY=0.75;
public final double BERRY=0.75;
  
private JCheckBox creamCheese;
private JCheckBox honey_1;
private JCheckBox peachJelly;
private JCheckBox blueberryJam;

public ToppingPanel(){
  
setLayout(new GridLayout(4,1));

  
creamCheese=new JCheckBox("Creame cheese");
honey_1=new JCheckBox("honey");
peachJelly=new JCheckBox("Peach jelly");
blueberryJam=new JCheckBox("Blueberry Jam");


setBorder(BorderFactory.createTitledBorder("Toppings"));


add(creamCheese);
add(honey_1);
add(peachJelly);
add(blueberryJam);
}

  
public double getToppingCost(){
double toppingCost=0.0;
if(creamCheese.isSelected()){
toppingCost+=CHEESE;
}
else if(honey_1.isSelected()){
toppingCost+=honey;
}
else if(peachJelly.isSelected()){
toppingCost+=JELLY;
}
else {
toppingCost+=BERRY;
}
return toppingCost;
}
}

===========GreetingPanel.java==============

import javax.swing.*;

public class GreetingPanel extends JPanel {
private JLabel greeting;

public GreetingPanel() {

greeting = new JLabel("Welcome tho Brandi's Bagel House");

  
add(greeting);
}
}

===========CoffeePanel.java==============

import java.awt.GridLayout;
import javax.swing.*;

public class CoffeePanel extends JPanel {
public final double NO_COFFEE = 0.0;
public final double REGULAR_COFFEE = 1.25;
public final double DECAF_COFFEE = 1.25;
public final double CAPPUCCINO = 2.00;

private JRadioButton noCoffee;
private JRadioButton regularCoffee;
private JRadioButton decafCoffee;
private JRadioButton cappuccino;
private ButtonGroup bg;

public CoffeePanel() {
  
setLayout(new GridLayout(4, 1));

noCoffee = new JRadioButton("None");
regularCoffee = new JRadioButton("Regular coffee", true);
decafCoffee = new JRadioButton("Decaf coffee");
cappuccino = new JRadioButton("Cappuccino");

bg = new ButtonGroup();
bg.add(cappuccino);
bg.add(decafCoffee);
bg.add(noCoffee);
bg.add(regularCoffee);

  
setBorder(BorderFactory.createTitledBorder("Coffee"));

add(noCoffee);
add(regularCoffee);
add(decafCoffee);
add(cappuccino);
}

public double getCoffeeCost() {
double coffeeCost = 0.0;
if (noCoffee.isSelected()) {
coffeeCost += NO_COFFEE;
} else if (regularCoffee.isSelected()) {
coffeeCost += REGULAR_COFFEE;
} else if (decafCoffee.isSelected()) {
coffeeCost += DECAF_COFFEE;
} else {
coffeeCost += CAPPUCCINO;
}
return coffeeCost;
}
}

===========ButtonPanel.java==============

import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.DecimalFormat;

import javax.swing.*;

public class ButtonPanel extends JPanel {
private class Exiting implements ActionListener {

public void actionPerformed(ActionEvent e) {
System.exit(0);
}
}

private class Calculating implements ActionListener {

public void actionPerformed(ActionEvent e) {
//if (e.getSource() == calButton) {
// System.out.println("Cong");
}
double subtotal, tax, total;

subtotal = bagels.getBagelCost() + toppings.getToppingCost()
+ coffee.getCoffeeCost();

  
tax = subtotal * TAX_RATE;

total = subtotal + tax;

  
DecimalFormat dollar = new DecimalFormat("0.00");

JOptionPane.showMessageDialog(null, "Subtotal: $"
+ dollar.format(subtotal) + " Tax: $" + dollar.format(tax)
+ " Total: $" + dollar.format(total));
}
}

private BagelPanel bagels;
private ToppingPanel toppings;
private CoffeePanel coffee;
private GreetingPanel banner;
private JButton calButton;
private JButton exitButton;
private final double TAX_RATE = 0.06;

public ButtonPanel() {

setLayout(new GridLayout(1, 2));

calButton = new JButton("Calculate");
exitButton = new JButton("Exit");

add(calButton);
add(exitButton);

calButton.addActionListener(new Calculating());
exitButton.addActionListener(new Exiting());
}
}

===========BagelPanel.java==============

import java.awt.GridLayout;

import javax.swing.*;

public class BagelPanel extends JPanel {
public final double RED_BAGEL = 1.25;
public final double RICE_BAGEL = 1.50;

private JRadioButton REDBagel;
private JRadioButton RICEBagel;
private ButtonGroup bg;

public BagelPanel() {
  
setLayout(new GridLayout(2, 1));

  
REDBagel = new JRadioButton("RED", true);
RICEBagel = new JRadioButton("RICE");

  
bg = new ButtonGroup();
bg.add(REDBagel);
bg.add(RICEBagel);

  
setBorder(BorderFactory.createTitledBorder("Bagel"));

  
add(RICEBagel);
add(REDBagel);
}
public double getBagelCost() {
double bagelCost = 0.0;
if (REDBagel.isSelected()) {
bagelCost = RED_BAGEL;
} else {
bagelCost = RICE_BAGEL;
}
return bagelCost;
}
}

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