NoClassDefFound error

[Eric Edwards]

I am using the newest version of TextPad, windows xp pro, etc.
When I try to run this app from TextPad or the command lline I get a:
Exception in thread main
java.lang.NoClassDefFound InvoiceApp
error on the TextPad and command line console.
I am using a book and teaching myself java--I'm stuck here.
My code is below.
Thanks in advance for any help.
Eric

 
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.text.*;
public class InvoiceApp
{
    public static void main(String[] args)
    {
        JFrame frame = new InvoiceFrame();
        frame.setVisible(true);
    }
}
class InvoiceFrame extends JFrame
{
    public InvoiceFrame()
    {
        setTitle("Invoice Total Calculator");
        setSize(267, 200);
        centerWindow(this);
        setResizable(false);
         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JPanel panel = new InvoicePanel();
        this.add(panel);
    }
    private void centerWindow(Window w)
    {
        Toolkit tk = Toolkit.getDefaultToolkit();
        Dimension d = tk.getScreenSize();
        setLocation((d.width-w.getWidth())/2, (d.height-w.getHeight())/2);
    }
}
class InvoicePanel extends JPanel implements ActionListener
{
    private JTextField subtotalTextField,
                       percentTextField                        discountTextField,
                       totalTextField;
    private JLabel     subtotalLabel,
                       percentLabel,
                       discountLabel,
                       totalLabel;
    private JButton    calculateButton,
                       exitButton;
public InvoicePanel()
{
    // display panel
    JPanel displayPanel = new JPanel();
    displayPanel.setLayout(new FlowLayout(FlowLayout.RIGHT));
    // subtotal label
    subtotalLabel = new JLabel("Subtotal:");
    displayPanel.add(subtotalLabel);
    // subtotal text field
    subtotalTextField = new JTextField(10);
    displayPanel.add(subtotalTextField);
    // percent label
    percentLabel = new JLabel("Discount Percent:");
    displayPanel.add(percentLabel);
    // percent text field
    percentTextField = new JTextField(10);
    displayPanel.add(percentTextField);
    // discount label
    discountLabel = new JLabel("Discount:");
    displayPanel.add(discountLabel);
    // discount text field
    discountTextField = new JTextField(10);
    displayPanel.add(discountTextField);
    // total label
    totalLabel = new JLabel("Invoice total:");
    displayPanel.add(totalLabel);
    // total text field
    totalTextField = new JTextField(10);
    totalTextField.setEditable(false);
    totalTextField.setFocusable(false);
    displayPanel.add(totalTextField);
    // button panel
    JPanel buttonPanel = new JPanel();
    buttonPanel.setLayout(new FlowLayout(FlowLayout.RIGHT));
    // calculate button
    calculateButton = new JButton("Calculate");
    calculateButton.addActionListener(this);
    buttonPanel.add(calculateButton);
    // exit button
    exitButton = new JButton("Exit");
    exitButton.addActionListener(this);
    buttonPanel.add(exitButton);
    // add panels to main panel
    this.setLayout(new BorderLayout());
    this.add(displayPanel,BorderLayout.CENTER);
    this.add(buttonPanel, BorderLayout.SOUTH);
}
public void actionPerformed(ActionEvent e)
{
    Object source = e.getSource();
    if (source == exitButton)
        System.exit(0);
    else if (source == calculateButton)
    {
        double subtotal =
        Double.parseDouble(subtotalTextField.getText());
        double discountPercent = 0.0;
        if (subtotal >= 200)
            discountPercent = .2;
        else if (subtotal >= 100 && subtotal < 200)
            discountPercent = .1;
        else if (subtotal < 100)
            discountPercent = .0;
        NumberFormat percent = NumberFormat.getPercentInstance();
        percentTextField.setText(percent.format(discountPercent));
        double discountAmount = subtotal * discountPercent;
        NumberFormat currency = NumberFormat.getCurrencyInstance();
        discountTextField.setText(currency.format(discountAmount));
        double totalInvoice = subtotal - discountAmount;
        totalTextField.setText(currency.format(totalInvoice));
    }
} 

[ November 07, 2005: Message edited by: eric edw ]
[ November 07, 2005: Message edited by: eric edw ]

[Eric Edwards]

Figured it out.
I had installed Quick Time the other day so I could view something.
QT had installed something called QT java and had changed my class path.
After I uninstalled QT, it corrected my class path and all is working fine now.
Another lesson learned on things to check.
Eric