Java program error in displaying Output

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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!!!

Code :

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);  
    }    
}

Re: Please HELP!!! Need help with Output

Here is the Calculation class just in case.

Code :

 
public class Calculation 
{
	private double priceDouble, subTotalDouble, taxDouble, 
	shippingDouble, totalDouble, discountDouble;
	private int quantityInteger, discountTypeInteger;
	private static double grandTotalDouble;
	private static int totalNumberOfOrdersInteger;
	private final double DISCOUNT_A = 0.20;
	private final double DISCOUNT_B = 0.10;
	private final double DISCOUNT_C = 0;
	private final double TAX_RATE = 0.0825;
	private final int SHIPPING_RATE_INTEGER = 1;
 
 
 
	public Calculation()
	{
 
	}
 
	public Calculation(int quantityNewInteger, int discountTypeNewInteger, double priceNewDouble)
	{
		setQuantity(quantityNewInteger);
		setPrice(priceNewDouble);
		setDiscount(discountTypeNewInteger);
		calculate();
	}
 
	private void setQuantity(int quantityNewInteger)
	{
		//assign public variable to private
		quantityInteger = quantityNewInteger;
 
		}
	private void setPrice(double priceNewDouble)
	{
		//assign public variable to private
		priceDouble = priceNewDouble;
 
		}
	private void setDiscount(int discountTypeNewInteger)
	{
		//assign public variable to private
		discountTypeInteger = discountTypeNewInteger;
	}
	private void calculate()
	{		
		//calculate the subTotal of the order
		subTotalDouble = quantityInteger * priceDouble;
		//calculate the shipping of the order
		shippingDouble = SHIPPING_RATE_INTEGER * quantityInteger;
		//calculate the Tax of the order
		taxDouble = subTotalDouble * TAX_RATE;
		//calculate the Total including shipping and tax of the order
		totalDouble = taxDouble + subTotalDouble + shippingDouble;
		// calculate the total of all ordersrs
		//and the number of orders processed
		grandTotalDouble += totalDouble;
 
		switch(discountTypeInteger)
		{
			case 1:
				calculateADiscount();
				totalNumberOfOrdersInteger++;
 
				break;
			case 2:
				calculateBDiscount();
				totalNumberOfOrdersInteger++;
				break;
			case 3:
				calculateCDiscount();
				totalNumberOfOrdersInteger++;
				break;
		}
 
	}
 
	private void calculateADiscount()
	{
		//calculate the subTotal of the order
		subTotalDouble = priceDouble * quantityInteger;
		//calculate the discount of the order
		discountDouble = subTotalDouble * DISCOUNT_A;
		//calculate the shipping of the order
		shippingDouble = SHIPPING_RATE_INTEGER * quantityInteger;
		//calculate the Tax of the order
		taxDouble = subTotalDouble * TAX_RATE;
		//calculate the Total including shipping and tax of the order
		totalDouble = taxDouble + subTotalDouble + shippingDouble;
 
	}
	//calculation of rental fees
	private void calculateBDiscount()
	{
		//calculate the subTotal of the order
		subTotalDouble = priceDouble * quantityInteger;
		//calculate the discount of the order
		discountDouble = subTotalDouble * DISCOUNT_B;
		//calculate the shipping of the order
		shippingDouble = SHIPPING_RATE_INTEGER * quantityInteger;
		//calculate the Tax of the order
		taxDouble = subTotalDouble * TAX_RATE;
		//calculate the Total including shipping and tax of the order
		totalDouble = taxDouble + subTotalDouble + shippingDouble;
	}
	//calculation of rental fees
	private void calculateCDiscount()
	{
		//calculate the subTotal of the order
		subTotalDouble = priceDouble * quantityInteger;
		//calculate the discount of the order
		discountDouble = DISCOUNT_C;
		//calculate the shipping of the order
		shippingDouble = SHIPPING_RATE_INTEGER * quantityInteger;
		//calculate the Tax of the order
		taxDouble = subTotalDouble * TAX_RATE;
		//calculate the Total including shipping and tax of the order
		totalDouble = taxDouble + subTotalDouble + shippingDouble;
	}
 
 
	public double getQuantity()
	{
		//returning quantity
		return quantityInteger;
 
	}
 
	public double getPrice()
	{
		//returning price
		return priceDouble;
	}
 
	public double getDiscount()
	{
		//returning discount
		return discountDouble;
 
	}
	public double getSubTotal()
	{
		//returning subTotal
		return subTotalDouble;
 
	}
 
	public double getShipping()
	{
		//returning shipping
		return shippingDouble;
 
	}
 
	public double getTax()
	{
		//returning Tax
		return taxDouble;
 
	}
 
	public double getTotal()
	{
		//returning grand total of orders
		return totalDouble;
	}
 
	public double getGrandTotal()
	{
		//returning grand total of orders
		return grandTotalDouble;
	}
 
	public int getNumberOfOrders()
	{
		//return total number of orders processed
		return totalNumberOfOrdersInteger;
	}	
}

May 14th, 2008, 09:18 AM
Flash

Re: Please HELP!!! Need help with Output

I keep getting "Quantity is Invalid" no matter what I enter...

I'm looking over the code for you now.

Re: Please HELP!!! Need help with Output

Ok I fixed that error..... I don't know why but I placed my try and catch twice. Removed the bottom one and now I don't have that error.

Code :

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);
    }
 
  //create a listener for the Radio Buttons
	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();        
    }
 
    //declaring local variables    	
 
 
 
    public void getInput() 
    {  	
        //declaring local variables 
    	char discountChar;
    	int quantityInteger;
    	int discountTypeInteger;
    	double priceDouble;
    	double discountDouble;
    	String nameString;
 
        // 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();
						}
			}
		}
	}			
    //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 =  '\n' + "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 =  '\n' + "Name of the Book: " + nameString + '\n' + 
    		"Quantity Ordered: " + formatNumberFormat.format(myCalcs.getQuantity())
    		+ '\n' + "Price: 	" + formatDecimalFormat.format(myCalcs.getPrice())
    		+ '\n' + "Discount Percentage: 10% " + 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 =  '\n' + "Name of the Book: " + nameString + '\n' +
    		"Quantity Ordered: " + formatNumberFormat.format(myCalcs.getQuantity())
    		+ '\n' + "Price: 	" + formatDecimalFormat.format(myCalcs.getPrice())
    		+ '\n' + "No Discount: " + 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);
 
    }    
}

May 14th, 2008, 09:51 AM
crazydeo

Re: Please HELP!!! Need help with Output

Quote:

Originally Posted by Flash

I keep getting "Quantity is Invalid" no matter what I enter...

I'm looking over the code for you now.

Any luck Flash?

Re: Please HELP!!! Need help with Output

First of all, there is no need to create two calculation objects as one will suffice, further more when using the try/catch block don't ignore the stacktraces as you did in your try catch blok. I've made some changes and comments in your code.

Code :

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);
	//create only one instance, not two!
	Calculation myOrder ;
	//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());		
			//	priceDouble = Double.parseDouble(priceTextField.getText());
 
		}
		catch(NumberFormatException e){
			//its ALWAYS a good idea to print the stacktrace.
		}
 
 
 
 
		if(discountARadioButton.isSelected())
		{
			discountChar = 'a';
			discountTypeInteger = getTypeOfDiscount(discountChar);
			nameString = bookNameTextField.getText();
 
			//You should try catch this.
 
			try{
				quantityInteger = Integer.parseInt(quantityTextField.getText());
				priceDouble = Double.parseDouble(priceTextField.getText());
 
			if((discountTypeInteger != -1))
			{	
				if (!(nameString.equals("")))
				{
					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();
				}
			}
			}
			catch(NumberFormatException e){
				outputTextArea.setText("Please recorrect your input.");
				//its ALWAYS a good idea to print the stacktrace.
			}
		}
		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("")))
				{
					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("")))
				{
					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();
				}
			}
		}	
	}
 
//	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(myOrder.getQuantity())
			+ '\n' + "Price: 	" + formatDecimalFormat.format(myOrder.getPrice())
			+ '\n' + "Discount Percentage: 20% " +
			formatDecimalFormat.format(myOrder.getDiscount())
			+ '\n' + "Subtotal: 	" + 
			formatDecimalFormat.format(myOrder.getSubTotal())
			+ '\n' + "Shipping: 	" +
			formatDecimalFormat.format(myOrder.getShipping())
			+ '\n' + "Tax: 	" +
			formatDecimalFormat.format(myOrder.getTax()) + '\n'+ 
			"Total:	" +	formatDecimalFormat.format(myOrder.getTotal())+'\n' +'\n' +
			"Total Quantity To-Date: " + (myOrder.getNumberOfOrders()) + '\n'
			+ "Grand Total To-Date: " + formatDecimalFormat.format(myOrder.getGrandTotal())+ '\n';
			outputTextArea.append(outputString);
		}
		else if(discountChar == 'b')
		{			
			outputString = "Name of the Book: " + nameString + '\n' + 
			"Quantity Ordered: " + formatNumberFormat.format(myOrder.getQuantity())
			+ '\n' + "Price: 	" + formatDecimalFormat.format(myOrder.getPrice())
			+ '\n' + "Discount Percentage: 20% " +
			formatDecimalFormat.format(myOrder.getDiscount())
			+ '\n' + "Subtotal: 	" + 
			formatDecimalFormat.format(myOrder.getSubTotal())
			+ '\n' + "Shipping: 	" +
			formatDecimalFormat.format(myOrder.getShipping())
			+ '\n' + "Tax: 	" +
			formatDecimalFormat.format(myOrder.getTax()) + '\n'+ 
			"Total:	" +	formatDecimalFormat.format(myOrder.getTotal())+'\n' +'\n' +
			"Total Quantity To-Date: " + (myOrder.getNumberOfOrders()) + '\n'
			+ "Grand Total To-Date: " + formatDecimalFormat.format(myOrder.getGrandTotal())+ '\n';
			outputTextArea.append(outputString);
		}
 
		else if(discountChar == 'c')
		{			
			outputString = "Name of the Book: " + nameString + '\n' + 
			"Quantity Ordered: " + formatNumberFormat.format(myOrder.getQuantity())
			+ '\n' + "Price: 	" + formatDecimalFormat.format(myOrder.getPrice())
			+ '\n' + "Discount Percentage: 20% " +
			formatDecimalFormat.format(myOrder.getDiscount())
			+ '\n' + "Subtotal: 	" + 
			formatDecimalFormat.format(myOrder.getSubTotal())
			+ '\n' + "Shipping: 	" +
			formatDecimalFormat.format(myOrder.getShipping())
			+ '\n' + "Tax: 	" +
			formatDecimalFormat.format(myOrder.getTax()) + '\n'+ 
			"Total:	" +	formatDecimalFormat.format(myOrder.getTotal())+'\n' +'\n' +
			"Total Quantity To-Date: " + (myOrder.getNumberOfOrders()) + '\n'
			+ "Grand Total To-Date: " + formatDecimalFormat.format(myOrder.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);  
	}    
}

if you have any questions about this let me know.

May 14th, 2008, 10:12 AM
Flash

Re: Please HELP!!! Need help with Output

I was almost there crazydeo but ES beat me too it!

Good work Engineeringserver!! - That is working perfectly for me :D
May 14th, 2008, 10:14 AM
Engineeringserver

Re: Please HELP!!! Need help with Output

Quote:

Originally Posted by Flash

I was almost there crazydeo but ES beat me too it!

Good work Engineeringserver!! - That is working perfectly for me :D

Your welcome :D
May 14th, 2008, 10:39 AM
crazydeo

Re: Please HELP!!! Need help with Output

Thank you FLASH and Engineeringserver!!!! You both seriously saved me a lot of headache!!
May 14th, 2008, 10:42 AM
Flash

Re: Please HELP!!! Need help with Output

Quote:

Thank you FLASH and Engineeringserver!!!! You both seriously saved me a lot of headache!!

Glad you got your answer here!!
Please Mark this thread as solved :)