IAm all mIx Up..Need serius Help

Question

Really nid help in this probelm...dont know how to use switch and Text Field please help ...
Mail order house sells 5 different product..prod1-$2.98, prod2-$4.50, prod3- $9.98, prod4- $4.49 and prod 5- $6.87..Write an application that reads a series of pairs of numbers as follows:
a)Product number
b)Quantity sold for one day
Program should use a switch structure to help determine the retail price for each product.Your program should calculate and display total retail value of all product sold last week. Use a TextField to obtaimn the product number from the user. Use sentinel -controlled loop to determine when the product should stop looping and display final results.
.....Help will ne greatly appreciate guys..Ive been doing this for 2 days..dont know where to place diffrent controls...send source code if possible thank you..

Answer 1

I've done something with 2 articles, but you need to improve it yourself.
It works like this:
- you enter a product number and an amount, separated by a slash (e.g. 2/3)
- for totals, you enter nothing, but simply press enter inside the text fieldimport java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Example extends JFrame implements ActionListener {
    private JTextField addField;
    private double totalSold;
    public Example () {
        super ("Example");
        totalSold = 0D;
        addField = new JTextField (10);
        addField.addActionListener (this);
        getContentPane ().setLayout (new FlowLayout ());
        getContentPane ().add (new JLabel ("product number/amount:"));
        getContentPane ().add (addField);
        setDefaultCloseOperation (EXIT_ON_CLOSE);
        pack ();
        setLocationRelativeTo (null);
        show ();
    public void actionPerformed (ActionEvent event) {
        String value = addField.getText ();
        if (value.equals ("")) {
            JOptionPane.showMessageDialog (this, "The total revenues are $" + totalSold, "Totals", JOptionPane.INFORMATION_MESSAGE);
        } else {
            String[] values = value.split ("/");
            double price;
            switch (Integer.parseInt (values[0])) {
                case 1:
                    price = 2.98;
                    break;
                case 2:
                    price = 4.5;
                    break;
                default:
                    price = 0D;
                    break;
            totalSold += Integer.parseInt (values[1]) * price;
            addField.setText ("");
        /* improvements here:
         *     - error handling
         *     - revenue formatting ($12.50)
         *     - more articles
         *     - resetting the totals after they're shown
    public static void main (String[] args) {
        new Example ();
}Kind regards,
Levi