I've been working on this project all night and have been unsuccessful in getting the values to display in output. All I get once I push the calculate button are 0's for each of the values, but the total is summed up. Please point me in the right direction.

Thank you in advance!!!


import javax.swing.*;
import java.awt.event.*;
import java.text.*;
import java.awt.*;
 
public class Presentation extends JFrame implements ActionListener, ItemListener 
{
    // All the GUI objects
JPanel mainPanel = new JPanel();
JPanel discountPanel = new JPanel();
JLabel storeLabel = new JLabel("       OrderBook INC.         ");
JTextField bookNameTextField = new JTextField(20);
JTextField quantityTextField = new JTextField(20);
JRadioButton discountARadioButton = new JRadioButton(" A ");
    JRadioButton discountBRadioButton = new JRadioButton(" B ");
    JRadioButton discountCRadioButton = new JRadioButton(" C ");
    JRadioButton discountInvisibleRadioButton = new JRadioButton("");
    ButtonGroup discountButtonGroup = new ButtonGroup();
JTextField priceTextField = new JTextField(20);
    JButton calculateButton = new JButton(" Calculate   ");
JTextArea outputTextArea = new JTextArea("Books Ordered", 10,25);
JScrollPane outputScrollPane = new JScrollPane(outputTextArea);
 
    //object of the font
    Font storeFont = new Font("Arial",Font.BOLD,14);
 
    public static void main(String[] args) 
    {
        //create an object of the class and code the close button
        Presentation myBooks = new Presentation();
        myBooks.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 
    }
 
    public Presentation() 
    {
        designFrame();
        add(mainPanel);
        setTitle("OrderBook INC.");
        setSize(304,600);
        setVisible(true);        
    }
 
    public void designFrame() 
    {
      //set the font and the color
storeLabel.setFont(storeFont);
storeLabel.setForeground(Color.GRAY);
      //add the components to the mainPanel
      mainPanel.add(storeLabel);
      mainPanel.add(new JLabel("       Book Name            "));
      mainPanel.add(bookNameTextField);
      mainPanel.add(new JLabel("    Quantity Ordered   "));
      mainPanel.add(quantityTextField);
      //adding discount radio buttons to car radio button group 
      mainPanel.add(new JLabel("   Discount Type   "));
discountButtonGroup.add(discountARadioButton);
    discountButtonGroup.add(discountBRadioButton);
    discountButtonGroup.add(discountCRadioButton);
    discountButtonGroup.add(discountInvisibleRadioButton);
    //adding radio buttons to panel
    mainPanel.add(discountARadioButton);
    mainPanel.add(discountBRadioButton);
    mainPanel.add(discountCRadioButton);
      priceTextField.setEditable(false);
calculateButton.setEnabled(false);
      mainPanel.add(new JLabel("    Price       "));
      mainPanel.add(priceTextField);
      mainPanel.add(calculateButton);
      mainPanel.add(outputScrollPane);
 
      //add the listeners
      priceTextField.addActionListener(this);
      calculateButton.addActionListener(this);
      discountARadioButton.addItemListener(this);
      discountBRadioButton.addItemListener(this);
    discountCRadioButton.addItemListener(this);
 
      //add the panel to the frame
      add(mainPanel);
      setSize(300,400);
      setVisible(true);
}
 
public void itemStateChanged(ItemEvent evt)
{
if(discountARadioButton.isSelected())    
    {
        enabledComponents();
    }
    else if (discountBRadioButton.isSelected())
    {
        enabledComponents();
    }
    else if (discountCRadioButton.isSelected())
    {
        enabledComponents();
    }
}
 
public void actionPerformed(ActionEvent evt)
{
getInput();
clear();
}
 
public void getInput() 
{      
//declaring local variables 
int quantityInteger;
int discountTypeInteger;
double priceDouble;
double discountDouble;
String nameString;
char discountChar;
 
// get input
try
{
        quantityInteger = Integer.parseInt(quantityTextField.getText());
        try
        {
        priceDouble = Double.parseDouble(priceTextField.getText());
        }
 
        catch(NumberFormatException err)
        {
            JOptionPane.showMessageDialog(null, "Price is invalid");
            priceTextField.selectAll();
            priceTextField.requestFocus();
        }
        }
    catch(NumberFormatException err)
    {
        JOptionPane.showMessageDialog(null, "Quantity is invalid");
        quantityTextField.selectAll();
        quantityTextField.requestFocus();
    }
 
 
    if(discountARadioButton.isSelected())
    {
discountChar = 'a';
        discountTypeInteger = getTypeOfDiscount(discountChar);
        nameString = bookNameTextField.getText();
quantityInteger = Integer.parseInt(quantityTextField.getText());
        priceDouble = Double.parseDouble(priceTextField.getText());
 
        if((discountTypeInteger != -1))
        {    
            if (!(nameString.equals("")))
            {
Calculation myOrder = new Calculation(quantityInteger, discountTypeInteger, priceDouble);
discountDouble = myOrder.getDiscount();
displayOutput(quantityInteger, priceDouble, discountDouble, nameString, discountChar);
clear();
                }
                else
                {
JOptionPane.showMessageDialog(null, "Please Enter Book Name");
                bookNameTextField.selectAll();
                bookNameTextField.requestFocus();
                }
            }
        }
    else if(discountBRadioButton.isSelected())
    {
        discountChar = 'b';
discountTypeInteger = getTypeOfDiscount(discountChar);
        nameString = bookNameTextField.getText();
quantityInteger = Integer.parseInt(quantityTextField.getText());
priceDouble = Double.parseDouble(priceTextField.getText());
 
if((discountTypeInteger != -1))
            {    
                if (!(nameString.equals("")))
                {
Calculation myOrder = new Calculation(quantityInteger, 
                discountTypeInteger, priceDouble);
discountDouble = myOrder.getDiscount();
displayOutput(quantityInteger, priceDouble, discountDouble, nameString, discountChar);
                clear();
                }
                else
                {
JOptionPane.showMessageDialog(null, "Please Enter Book Name");
                bookNameTextField.selectAll();
                bookNameTextField.requestFocus();
                }
 
            }
        }
else if(discountCRadioButton.isSelected())
    {
        discountChar = 'c';
        discountTypeInteger = getTypeOfDiscount(discountChar);
        nameString = bookNameTextField.getText();
quantityInteger = Integer.parseInt(quantityTextField.getText());
        priceDouble = Double.parseDouble(priceTextField.getText());
 
            if((discountTypeInteger != -1))
            {    
                if (!(nameString.equals("")))
                {
                Calculation myOrder = new
Calculation(quantityInteger, 
                discountTypeInteger, priceDouble);
                discountDouble = myOrder.getDiscount();
displayOutput(quantityInteger, priceDouble, discountDouble, nameString, discountChar);
                clear();
                }
                else
                {
JOptionPane.showMessageDialog(null, "Please Enter Book Name");
                bookNameTextField.selectAll();
                bookNameTextField.requestFocus();
                }
}
}
try
{
quantityInteger = Integer.parseInt(quantityTextField.getText());
 
    try
    {
    priceDouble = Double.parseDouble(priceTextField.getText());
 
    }
    catch(NumberFormatException err)
    {
    JOptionPane.showMessageDialog(null, "Price is Invalid");
    priceTextField.selectAll();
    priceTextField.requestFocus();
    }
    }
    catch(NumberFormatException err)
    {
    JOptionPane.showMessageDialog(null, "Quantity is Invalid");
    quantityTextField.selectAll();
    quantityTextField.requestFocus();
    }
    }
 
//set text fields visible once a discount is selected    
public void enabledComponents()
{
    priceTextField.setEditable(true);
    calculateButton.setEnabled(true);
}
 
public int getTypeOfDiscount(char discountChar)
{        
    int discountTypeInteger = 0;
    {
    if(discountARadioButton.isSelected())
    {
    discountTypeInteger = 1;
    }
    else if(discountBRadioButton.isSelected())
    {
    discountTypeInteger = 2;
    }
    else if(discountCRadioButton.isSelected())
    {
    discountTypeInteger = 3;
    }
    else if(discountInvisibleRadioButton.isSelected())
    {
    discountTypeInteger = -1;
    }
    }
return discountTypeInteger;
    }
 
    public void displayOutput(int quantityInteger, double priceDouble, 
        double discountDouble, String nameString, char discountChar) 
    {
        //object to format to currency
      DecimalFormat formatDecimalFormat = new DecimalFormat("$0.00");
      DecimalFormat formatNumberFormat = new DecimalFormat("0");
Calculation myCalcs = new Calculation();
 
      String outputString;
 
      if(discountChar == 'a')
    {            
    outputString = "Name of the Book: " + nameString + '\n' + 
"Quantity Ordered: " + formatNumberFormat.format(myCalcs.getQuantity())
+ '\n' + "Price:     " + formatDecimalFormat.format(myCalcs.getPrice())
        + '\n' + "Discount Percentage: 20% " +
formatDecimalFormat.format(myCalcs.getDiscount())
        + '\n' + "Subtotal:     " + 
formatDecimalFormat.format(myCalcs.getSubTotal())
        + '\n' + "Shipping:     " +
formatDecimalFormat.format(myCalcs.getShipping())
        + '\n' + "Tax:     " +
formatDecimalFormat.format(myCalcs.getTax()) + '\n'+ 
        "Total:    " +    formatDecimalFormat.format(myCalcs.getTotal())+'\n' +'\n' +
    "Total Quantity To-Date: " + (myCalcs.getNumberOfOrders()) + '\n'
+ "Grand Total To-Date: " + formatDecimalFormat.format(myCalcs.getGrandTotal())+ '\n';
    outputTextArea.append(outputString);
    }
    else if(discountChar == 'b')
        {            
    outputString = "Name of the Book: " + nameString + '\n' + 
"Quantity Ordered: " + formatNumberFormat.format(myCalcs.getQuantity())
+ '\n' + "Price:     " + formatDecimalFormat.format(myCalcs.getPrice())
        + '\n' + "Discount Percentage: 20% " +
formatDecimalFormat.format(myCalcs.getDiscount())
        + '\n' + "Subtotal:     " + 
formatDecimalFormat.format(myCalcs.getSubTotal())
        + '\n' + "Shipping:     " +
formatDecimalFormat.format(myCalcs.getShipping())
        + '\n' + "Tax:     " +
formatDecimalFormat.format(myCalcs.getTax()) + '\n'+ 
        "Total:    " +    formatDecimalFormat.format(myCalcs.getTotal())+'\n' +'\n' +
    "Total Quantity To-Date: " + (myCalcs.getNumberOfOrders()) + '\n'
+ "Grand Total To-Date: " + formatDecimalFormat.format(myCalcs.getGrandTotal())+ '\n';
    outputTextArea.append(outputString);
    }
 
    else if(discountChar == 'c')
    {            
    outputString = "Name of the Book: " + nameString + '\n' + 
"Quantity Ordered: " + formatNumberFormat.format(myCalcs.getQuantity())
+ '\n' + "Price:     " + formatDecimalFormat.format(myCalcs.getPrice())
        + '\n' + "Discount Percentage: 20% " +
formatDecimalFormat.format(myCalcs.getDiscount())
        + '\n' + "Subtotal:     " + 
formatDecimalFormat.format(myCalcs.getSubTotal())
        + '\n' + "Shipping:     " +
formatDecimalFormat.format(myCalcs.getShipping())
        + '\n' + "Tax:     " +
formatDecimalFormat.format(myCalcs.getTax()) + '\n'+ 
        "Total:    " +    formatDecimalFormat.format(myCalcs.getTotal())+'\n' +'\n' +
    "Total Quantity To-Date: " + (myCalcs.getNumberOfOrders()) + '\n'
+ "Grand Total To-Date: " + formatDecimalFormat.format(myCalcs.getGrandTotal())+ '\n';
    outputTextArea.append(outputString);
    }
}
    }
 
    public void  clear()
    {
//clear existing text from text fields and request cursor to top
bookNameTextField.setText("");
quantityTextField.setText("");
discountInvisibleRadioButton.setSelected(true);
priceTextField.setText("");
bookNameTextField.requestFocus();
priceTextField.setEditable(false);
calculateButton.setEnabled(false);  
    }    
}