ADVANCED GUIS AND GRAPHICS - Java Programming: From Problem Analysis to Program Design - page 862

bill.append("\n");
bill.append("SUB TOTAL\t\t$"
+ String.format("%.2f", subTotal) + "\n");
bill.append("TAX \t\t$"
+ String.format("%.2f", tax) + "\n");
bill.append("TOTAL \t\t$"
+ String.format("%.2f", total) + "\n\n");
bill.append("Thank you - Have a Nice Day\n\n");

//reset the list array
yourChoices.clearSelection();

repaint();

}

The program listing is as follows:

//A la Carte

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;

public class AlaCarte extends JFrame implements ActionListener
{

static String[] yourChoicesItems =
{"Blueberry Muffin 1.45",

"Strawberry Bagel 0.80",

"Lite Yogurt 0.75",

"Vanilla Ice Cream 2.75",

"Hash Browns 2.50",

"Toast 2.00",

"French Fries 1.50",

"Onion Soup 3.00",

"Coffee 0.90",

"Iced Tea 1.00",

"Hot Chocolate 1.75"};

static double [] yourChoicesPrices = {1.45, 0.80, 0.75, 2.75,
2.50, 2.00, 1.50, 3.00,
0.90, 1.00, 1.75};

private JList yourChoices;
private JTextArea bill;

private Container pane;