Help with a label output. Probably something simple.

Question

Don't worry about the rest of the code, my problem is that the label will not update after the btOption1 button is clicked.
Any suggestions?
// Create the event
    class ButtonListener implements ActionListener
        public void actionPerformed(ActionEvent e)
            if(e.getSource() == btOption1)
                // Declare variables
                int intTickets = 0;
                double dblSurcharge = 0;
                double dblTotal = 0;
                String strNum1 = lblFName1.toString();
                String strNum2 = lblFName2.toString();
                String strNum3 = lblFName3.toString();
                String strNum4 = lblFName4.toString();
                String strOutput = "";
                // Calculate the amount of tickets sold for the surcharge
                intTickets = Integer.parseInt(strNum1) + Integer.parseInt(strNum2) + Integer.parseInt(strNum3) + Integer.parseInt(strNum4);
                // Calculate the surcharge
                dblSurcharge = 5 * intTickets;
                // Calculate the total cost
                dblTotal = dblSurcharge + ((Integer.parseInt(strNum1) * 7.50) + (Integer.parseInt(strNum2) * 6.25) + (Integer.parseInt(strNum3) * 8.75) + (Integer.parseInt(strNum4) * 7.50));
                //  Convert the double to string
                strOutput = dblTotal.toString();
                // Display the total cost of the tickets
                lblOutput.setText("$" + dblTotal);
    }Edited by: Anonymous23 on Jun 7, 2010 3:05 PM

Answer 1

import javax.swing.*;
import java.awt.GridLayout;
import java.awt.event.*;
import java.awt.*;
public class FandangoTickets extends JFrame
    int intTickets = 0;
    int intSurcharge = 5;
    double dblTotal = 0;
    private JButton btOption1 = new JButton("Order");
    private JLabel lblImage = new JLabel(new ImageIcon("Images/Fandango.jpg"));
    private JTextField lblFName1 = new JTextField("0");
    private JTextField lblFName2 = new JTextField("0");
    private JTextField lblFName3 = new JTextField("0");
    private JTextField lblFName4 = new JTextField("0");
    private JLabel lblOutput = new JLabel("$0.00");
    public FandangoTickets()
        setLayout(new GridLayout (7,3,3,3));
        add(new JLabel("Matinee Tickets:"));
        add(new JLabel(""));
        add(new JLabel(""));
        add(new JLabel(""));
        add(new JLabel("Adult Ticket"));
        add(lblFName1);
        add(new JLabel(""));
        add(new JLabel("Child Ticket"));
        add(lblFName2);
        add(new JLabel("Evening Tickets:"));
        add(new JLabel(""));
        add(new JLabel(""));
        add(new JLabel(""));
        add(new JLabel("Adult Ticket"));
        add(lblFName3);
        add(new JLabel(""));
        add(new JLabel("Child Ticket"));
        add(lblFName4);
        add(lblImage);
        add(btOption1);
        add(lblOutput);
    class ButtonListener implements ActionListener
        public void actionPerformed(ActionEvent e)
            if(e.getSource() == btOption1)
                String strNum1 = lblFName1.toString();
                String strNum2 = lblFName2.toString();
                String strNum3 = lblFName3.toString();
                String strNum4 = lblFName4.toString();
                String strOutput = "";
                dblTotal = intSurcharge + ((Integer.parseInt(strNum1) * 7.50) + (Integer.parseInt(strNum2) * 6.25) + (Integer.parseInt(strNum3) * 8.75) + (Integer.parseInt(strNum4) * 7.50));
                strOutput = Double.toString(dblTotal);
                lblOutput.setText("$" + dblTotal);
    public static void main()
        FandangoTickets frame = new FandangoTickets();
        frame.setTitle("Fandango Tickets");
        frame.setSize(300,300);
        frame.setLocationRelativeTo(null);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
}