JAVA Application: I need help to create the Process tab and its corresponding fu

Question

JAVA Application: I need help to create the Process tab and its corresponding functions. Please help me with any errors within the current code itself as well. The ending application should look something like the pictures depicted below as Instructions.

My code so far: See pastebin link at bottom for neater version.

package icecreamorder;

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.text.DecimalFormat;

/**
*

*/
public class IceCreamOrder extends JPanel {

public final double VANILLA = 2.25;
public final double CHOCOLATE = 2.25;
public final double STRAWBERRY = 2.25;

private JRadioButton vanillaFlavor;
private JRadioButton chocolateFlavor;
private JRadioButton strawberryFlavor;
private ButtonGroup bg;

}

public IceCreamOrder()
{
setLayout(new GridLayout(1, 3));

/*(setTitle("Joel Jacob - Ice Cream Order");

setSize(WINDOW_WIDTH, WINDOW_HEIGHT);   

SetDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

setVisible(true); */

vanillaFlavor = new JRadioButton("Vanilla", true);
chocolateFlavor = new JRadioButton("Chocolate");
strawberryFlavor = new JRadioButton("Strawberry");

bg = new ButtonGroup();
bg.add(vanillaFlavor);
bg.add(chocolateFlavor);
bg.add(strawberryFlavor);

add(vanillaFlavor);
add(chocolateFlavor);
add(strawberryFlavor);

  
  
}

public double getIceCreamCost()
{
  
double iceCreamCost = 0.0;

if (vanillaFlavor.isSelected())
{
iceCreamCost = VANILLA;
}
if (chocolateFlavor.isSelected())
{
iceCreamCost = CHOCOLATE;
}
if (strawberryFlavor.isSelected())
{
iceCreamCost = STRAWBERRY;
}
  
return IceCreamCost;

}

public class Extras etends JPanel
{
public final double NUTS = 0.50;
public final double CHERRIES = 0.50;

private JCheckBox nuts;
private JCheckBox cherries;
}

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

nuts = new JCheckBox("Nuts");
cherries = new JCheckBox("Cherries");

add(nuts);
add(cherries);

}

public double getExtrasCost()
{

double extrasCost = 0.0;
if (nuts.isSelected())
extrasCost = NUTS;
if (cherries.isSelected())
extrasCost = CHERRIES;

return extrasCost;
}

  

  
public static void main(String[] args)
{
// TODO code application logic here
}
  
}

http://pastebin.com/5wfsq5iQ

Explanation / Answer

//importing packages

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

import java.text.DecimalFormat;

import java.io.*;`

//IceCream.java

public class IceCream extends JFrame

{

//Constants for window width and height

   private final int WINDOW_WIDTH = 500;

   private final int WINDOW_HEIGHT = 250;

//Ice cream flavors

   private JRadioButton bVan; //Vanilla Radio button

   private JRadioButton bStraw; //Strawberry Radio button

private JRadioButton bChoc; //Chocolate radio button

   //Nuts

   private JCheckBox cbNuts; //Checkbox for Nuts

   private JCheckBox cbCherr; //Checkbox for Cherries

   //Syrup

   private JRadioButton bChocSyrup; //Radio button for Chocolate syrup

   private JRadioButton bCaramSyrup; //Radio button for Caramel syrup

private JRadioButton bNoSyrup; //Radio button for No syrup

   //Buttons for Open, Save and Close features.

   private JButton Save;

   private JButton Open;

   private JButton Total;

//Button Groups for Ice Cream flavors and Syrup flavors

   private ButtonGroup iceCreamGroup;

   private ButtonGroup syrupGroup;

//Panels for the button groups

   private JPanel iceCreamPanel; //IceCream flavor Panel

private JPanel syrupPanel; //Syrup flavors panel

   private JPanel buttonPanel; //Panel for Save, Open, and Total buttons

//CONSTRUCTOR  

   public IceCream()  

   {   

   //Window title

      setTitle("Icecream Orders");

   //Set size

setSize(WINDOW_WIDTH,WINDOW_HEIGHT);

//Default close operation

      setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);  

   //Calling buildPanel method

      buildPanels();

setLayout(new GridLayout(2,2));

      //Adding the panel to JFrame

      add(iceCreamPanel);

add(nutsPanel);

      add(syrupPanel);

      add(buttonPanel);

    //Visibility

      setVisible(true);

}

   private void buildPanels()

   {

      //Initializing the flavor radio butons and adding them to the Buton Group

bVan = new JRadioButton("Vanilla", true);

      bStraw = new JRadioButton("Strawberry");

      bChoc = new JRadioButton("Chocolate");

   iceCreamGroup = new ButtonGroup();

      iceCreamGroup.add(bVan);

      iceCreamGroup.add(bStraw);

      iceCreamGroup.add(bChoc);

      //Initializing the Checkbox for nuts and cherries

cbNuts = new JCheckBox("Nuts?");

      cbCherr = new JCheckBox("Cherries?");

      //Initializing the Syrup radio buttons and adding them to the Button Group

      bChocSyrup = new JRadioButton("Chocolate", true);

      bCaramSyrup = new JRadioButton("Caramel");

      bNoSyrup = new JRadioButton("None");

    syrupGroup = new ButtonGroup();

      syrupGroup.add(bChocSyrup);

      syrupGroup.add(bCaramSyrup);

syrupGroup.add(bNoSyrup);

  //Initializing the Buttons

      Save = new JButton("Save Order");

      Open = new JButton("Open Order");

      Total = new JButton("Total");

      //Associating action listener to the total button

      Total.addActionListener(new TotalButtonListener());

   //Initializing the panels

      iceCreamPanel = new JPanel();

nutsPanel = new JPanel();

      syrupPanel = new JPanel();

      buttonPanel = new JPanel();

//Setting borders of the panels

      iceCreamPanel.setBorder(BorderFactory.createTitledBorder("Ice Cream Flavor"));

      nutsPanel.setBorder(BorderFactory.createTitledBorder("Nuts?"));

      syrupPanel.setBorder(BorderFactory.createTitledBorder("Syrup Flavor"));

  //Adding the objecs to the respective panels

      iceCreamPanel.add(bVan);

iceCreamPanel.add(bStraw);

      iceCreamPanel.add(bChoc);

    nutsPanel.add(cbNuts);

      nutsPanel.add(cbCherr);

      syrupPanel.add(bChocSyrup);

      syrupPanel.add(bCaramSyrup);

      syrupPanel.add(bNoSyrup);

        buttonPanel.add(Save);

      buttonPanel.add(Open);

buttonPanel.add(Total);

   }//End buildPanels

private class TotalButtonListener implements ActionListener

   {

      public void actionPerformed(ActionEvent e)

      {

         double total = 1.5;

         //Creating a new deciaml format using DecimalFormater

         DecimalFormat formatter = new DecimalFormat("##.##");

       //Calculating total price using .isSelcted method

         if(cbNuts.isSelected())

           total += 0.75;

      if(cbCherr.isSelected())

           total += 0.50;

         if(bChocSyrup.isSelected())

            total += 0.75;

      if(bCaramSyrup.isSelected())

            total += 0.75;   

   //Calculating sales tax

         double tax = total * 0.06;

JOptionPane.showMessageDialog(null, "Total: $" + (formatter.format(total + tax)) +

                                    " ($" + formatter.format(total) + " + $"

                                     + formatter.format(tax) + " tax)");

} //End actionPermormed

   } //End TotalButtonListener      

   //Embedded Main method

   public static void main(String[] args)

   {

      new IceCream();

   } //End Main

} //End Class

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