gistfile1.txt

import java.awt.*;
import java.awt.event.*;

import javax.swing.*;
import javax.swing.border.*;

public class Layout2 extends JApplet {
	// string array for jlist
	private String[] receiptList = new String[15];
	{
		receiptList[0] = "No Items Selected                               ";
	}
	private int receiptIndex = 0;

	private double subTotal = 0.0;
	private double total = 0.0;

	// buttons for calculating total cost and removing items from the receipt
	private JButton jbTotal = new JButton("Total");
	private JButton jbClearAll = new JButton("Clear All");
	private JButton jbClear = new JButton("Clear");

	// list for receipt and text area for dietary needs
	private JList jlReceipt = new JList(receiptList);
	private JTextArea jtaDiet = new JTextArea();

	// text fields for menu item quantities
	private JTextField jtfMainItem1 = new JTextField();
	private JTextField jtfMainItem2 = new JTextField();
	private JTextField jtfMainItem3 = new JTextField();
	private JTextField jtfMainItem4 = new JTextField();
	private JTextField jtfMainItem5 = new JTextField();

	private JTextField jtfSideItem1 = new JTextField(1);
	private JTextField jtfSideItem2 = new JTextField(1);
	private JTextField jtfSideItem3 = new JTextField(1);
	private JTextField jtfSideItem4 = new JTextField(1);
	private JTextField jtfSideItem5 = new JTextField(1);

	private JTextField jtfDrinkItem1 = new JTextField();
	private JTextField jtfDrinkItem2 = new JTextField();
	private JTextField jtfDrinkItem3 = new JTextField();
	private JTextField jtfDrinkItem4 = new JTextField();
	private JTextField jtfDrinkItem5 = new JTextField();

	private JTextField jtfSubtotal = new JTextField();
	private JTextField jtfTotal = new JTextField();

	// menu item check boxes
	private JCheckBox jcbMainItem1 = new JCheckBox();
	private JCheckBox jcbMainItem2 = new JCheckBox();
	private JCheckBox jcbMainItem3 = new JCheckBox();
	private JCheckBox jcbMainItem4 = new JCheckBox();
	private JCheckBox jcbMainItem5 = new JCheckBox();
	// main menu item combo boxes
	private JComboBox jcbItemSelct1 = new JComboBox(new Object[] { "Red Sauce",
			"Alfredo", "Meat Sauce", "Plain" });
	private JComboBox jcbItemSelct2 = new JComboBox(new Object[] { "Red Sauce",
			"Alfredo", "Meat Sauce", "Plain" });
	private JComboBox jcbItemSelct3 = new JComboBox(new Object[] { "Red Sauce",
			"Plain" });
	private JComboBox jcbItemSelct4 = new JComboBox(new Object[] {
			"Xtra Sauce", "Plain" });

	private JComboBox jcbItemSelct5 = new JComboBox(new Object[] {
			"Minestrone", "Zuppa", "Brocolli", "Italian" });
	// sides menu check boxes
	private JCheckBox jcbSideItem1 = new JCheckBox();
	private JCheckBox jcbSideItem2 = new JCheckBox();
	private JCheckBox jcbSideItem3 = new JCheckBox();
	private JCheckBox jcbSideItem4 = new JCheckBox();
	private JCheckBox jcbSideItem5 = new JCheckBox();
	// drinks check boxes
	private JCheckBox jcbDrinkItem1 = new JCheckBox();
	private JCheckBox jcbDrinkItem2 = new JCheckBox();
	private JCheckBox jcbDrinkItem3 = new JCheckBox();
	private JCheckBox jcbDrinkItem4 = new JCheckBox();
	private JCheckBox jcbDrinkItem5 = new JCheckBox();

	// payment type radio buttons
	private JRadioButton jrbCheck = new JRadioButton("Check");
	private JRadioButton jrbCreditDebit = new JRadioButton("Credit/Debit");
	private JRadioButton jrbCash = new JRadioButton("Cash");

	public Layout2() {
		// scroll bars for diet needs and receipt
		JScrollPane jspDrinksietScroll = new JScrollPane(jtaDiet);
		JScrollPane jspReceiptScroll = new JScrollPane(jlReceipt);
		jspReceiptScroll.setSize(250, 40);

		ButtonGroup bgPay = new ButtonGroup();
		bgPay.add(jrbCheck);
		bgPay.add(jrbCreditDebit);
		bgPay.add(jrbCash);

		// main menu panel
		JPanel pMain = new JPanel(new GridLayout(5, 4));

		pMain.add(new JLabel("Spaghetti"));
		pMain.add(jcbItemSelct1);
		pMain.add(jcbMainItem1);
		pMain.add(jtfMainItem1);

		pMain.add(new JLabel("Fettucine"));
		pMain.add(jcbItemSelct2);
		pMain.add(jcbMainItem2);
		pMain.add(jtfMainItem2);

		pMain.add(new JLabel("Ravioli"));
		pMain.add(jcbItemSelct3);
		pMain.add(jcbMainItem3);
		pMain.add(jtfMainItem3);

		pMain.add(new JLabel("Grlc Chkn"));
		pMain.add(jcbItemSelct4);
		pMain.add(jcbMainItem4);
		pMain.add(jtfMainItem4);

		pMain.add(new JLabel("Soup"));
		pMain.add(jcbItemSelct5);
		pMain.add(jcbMainItem5);
		pMain.add(jtfMainItem5);
		pMain.setBorder(new TitledBorder("Main Menu"));

		// sides menu
		JPanel pSides = new JPanel(new GridLayout(5, 3));

		pSides.add(new JLabel("Caesar Salad"));
		pSides.add(jcbSideItem1);
		pSides.add(jtfSideItem1);

		pSides.add(new JLabel("Side Salad"));
		pSides.add(jcbSideItem2);
		pSides.add(jtfSideItem2);

		pSides.add(new JLabel("Breadsticks"));
		pSides.add(jcbSideItem3);
		pSides.add(jtfSideItem3);

		pSides.add(new JLabel("Garlic Bread"));
		pSides.add(jcbSideItem4);
		pSides.add(jtfSideItem4);

		pSides.add(new JLabel("Doge"));
		pSides.add(jcbSideItem5);
		pSides.add(jtfSideItem5);
		pSides.setBorder(new TitledBorder("Sides"));

		// Drink Menu
		JPanel pDrinks = new JPanel(new GridLayout(5, 3));

		pDrinks.add(new JLabel("Soda Pop"));
		pDrinks.add(jcbDrinkItem1);
		pDrinks.add(jtfDrinkItem1);

		pDrinks.add(new JLabel("Beer"));
		pDrinks.add(jcbDrinkItem2);
		pDrinks.add(jtfDrinkItem2);

		pDrinks.add(new JLabel("Milk"));
		pDrinks.add(jcbDrinkItem3);
		pDrinks.add(jtfDrinkItem3);

		pDrinks.add(new JLabel("Water"));
		pDrinks.add(jcbDrinkItem4);
		pDrinks.add(jtfDrinkItem4);

		pDrinks.add(new JLabel("Juice"));
		pDrinks.add(jcbDrinkItem5);
		pDrinks.add(jtfDrinkItem5);

		pDrinks.setBorder(new TitledBorder("Drinks"));

		// diet panel
		JPanel pDrinksiet = new JPanel(new GridLayout(1, 1));
		pDrinksiet.add(jspDrinksietScroll);
		pDrinksiet.setBorder(new TitledBorder(
				"Please Specify Any Dietary Preferences"));

		// receipt panels
		JPanel pClear = new JPanel(new GridLayout());
		pClear.add(jbClear);
		pClear.add(jbClearAll);

		JPanel pList = new JPanel(new FlowLayout());
		pList.add(jspReceiptScroll);

		JPanel pTotal = new JPanel(new GridLayout(2, 2));
		pTotal.add(new Label("SUBTOTAL"));
		pTotal.add(jtfSubtotal);
		pTotal.add(jbTotal);
		pTotal.add(jtfTotal);

		JPanel pPay = new JPanel(new FlowLayout());
		pPay.add(jrbCheck);
		pPay.add(jrbCreditDebit);
		pPay.add(jrbCash);

		JPanel pSidesubReceipt = new JPanel(new BorderLayout());
		pSidesubReceipt.add(pClear, BorderLayout.NORTH);
		pSidesubReceipt.add(pList, BorderLayout.CENTER);

		JPanel pSidesubReceipt2 = new JPanel(new BorderLayout());
		pSidesubReceipt2.add(pTotal, BorderLayout.CENTER);
		pSidesubReceipt2.add(pPay, BorderLayout.SOUTH);

		JPanel pReceipt = new JPanel(new BorderLayout());
		pReceipt.setPreferredSize(new Dimension(250, 250));
		pReceipt.add(pSidesubReceipt, BorderLayout.CENTER);
		pReceipt.add(pSidesubReceipt2, BorderLayout.SOUTH);

		// large panel groupSides
		JPanel pBottom = new JPanel(new BorderLayout());
		pBottom.add(pDrinksiet, BorderLayout.CENTER);
		pBottom.add(pReceipt, BorderLayout.EAST);

		// menu panel
		JPanel pMenu = new JPanel(new GridLayout(0, 3));
		pMenu.add(pSides);
		pMenu.add(pMain);
		pMenu.add(pDrinks);

		// assembly
		add(pMenu, BorderLayout.CENTER);
		add(pBottom, BorderLayout.SOUTH);
		add(new Label("Da Resturant"), BorderLayout.NORTH);

		// Button Listeners
		jbClear.addActionListener(new ClearButton());
		jbClearAll.addActionListener(new ClearAllButton());
		jcbMainItem1.addActionListener(new MainItemCB1());
		jcbMainItem2.addActionListener(new MainItemCB2());
		jcbMainItem3.addActionListener(new MainItemCB3());
		jcbMainItem4.addActionListener(new MainItemCB4());
		jcbMainItem5.addActionListener(new MainItemCB5());
		jcbSideItem1.addActionListener(new SideItemCB1());
		jcbSideItem2.addActionListener(new SideItemCB2());
		jcbSideItem3.addActionListener(new SideItemCB3());
		jcbSideItem4.addActionListener(new SideItemCB4());
		jcbSideItem5.addActionListener(new SideItemCB5());
		jcbDrinkItem1.addActionListener(new DrinkItemCB1());
		jcbDrinkItem2.addActionListener(new DrinkItemCB2());
		jcbDrinkItem3.addActionListener(new DrinkItemCB3());
		jcbDrinkItem4.addActionListener(new DrinkItemCB4());
		jcbDrinkItem5.addActionListener(new DrinkItemCB5());
		jbTotal.addActionListener(new ButtonListener());
	}

	// total amount
	private class ButtonListener implements ActionListener {

		@Override
		public void actionPerformed(ActionEvent arg0) {
			total = subTotal + (subTotal * .075);
			jtfTotal.setText(String.format("$ %.2f", total));
			// jlReceipt.updateUI();
		}

	}

	class ClearButton implements ActionListener {

		@Override
		public void actionPerformed(ActionEvent e) {
			receiptList[0] = null;
			jlReceipt.updateUI();
			jtfSubtotal.setText(null);// added to clear subtotal using clear button.  
			jtfSubtotal.updateUI();//it only clears one item and doesn't update to allow re-adding items.
			subTotal = 0;							
			
		}

	}

	class ClearAllButton implements ActionListener {

		@Override
		public void actionPerformed(ActionEvent e) {
			receiptList[0] = null;
			jlReceipt.updateUI();
			jtfSubtotal.setText(null);
			jtfSubtotal.updateUI();
			subTotal = 0;
		}

	}

	// main menu check box action listener
	class MainItemCB1 implements ActionListener {

		@Override
		public void actionPerformed(ActionEvent e) {

			updateReceipt();
		}

	}

	class MainItemCB2 implements ActionListener {

		@Override
		public void actionPerformed(ActionEvent e) {

			updateReceipt();
		}

	}

	class MainItemCB3 implements ActionListener {

		@Override
		public void actionPerformed(ActionEvent e) {

			updateReceipt();
		}

	}

	class MainItemCB4 implements ActionListener {

		@Override
		public void actionPerformed(ActionEvent e) {

			updateReceipt();
		}

	}

	class MainItemCB5 implements ActionListener {

		@Override
		public void actionPerformed(ActionEvent e) {

			updateReceipt();
		}

	}

	class SideItemCB1 implements ActionListener {

		@Override
		public void actionPerformed(ActionEvent e) {

			updateReceipt();
		}

	}

	class SideItemCB2 implements ActionListener {

		@Override
		public void actionPerformed(ActionEvent e) {

			updateReceipt();
		}

	}

	class SideItemCB3 implements ActionListener {

		@Override
		public void actionPerformed(ActionEvent e) {

			updateReceipt();
		}

	}

	class SideItemCB4 implements ActionListener {

		@Override
		public void actionPerformed(ActionEvent e) {

			updateReceipt();
		}

	}

	class SideItemCB5 implements ActionListener {

		@Override
		public void actionPerformed(ActionEvent e) {

			updateReceipt();
		}

	}

	class DrinkItemCB1 implements ActionListener {

		@Override
		public void actionPerformed(ActionEvent e) {

			updateReceipt();
		}

	}

	class DrinkItemCB2 implements ActionListener {

		@Override
		public void actionPerformed(ActionEvent e) {

			updateReceipt();
		}

	}

	class DrinkItemCB3 implements ActionListener {

		@Override
		public void actionPerformed(ActionEvent e) {

			updateReceipt();
		}

	}

	class DrinkItemCB4 implements ActionListener {

		@Override
		public void actionPerformed(ActionEvent e) {

			updateReceipt();
		}

	}

	class DrinkItemCB5 implements ActionListener {

		@Override
		public void actionPerformed(ActionEvent e) {

			updateReceipt();
		}

	}

	private void updateReceipt() {
		double amount1 = 10.00;
		double amount2 = 9.00;
		double amount3 = 7.00;
		double amount4 = 5.00;
		double amount5 = 8.00;
		// update receipt()
		// replace with a switch-case?
		if (jcbMainItem1.isSelected()) {

			receiptList[receiptIndex] = "Spaghetti..........$" + amount1;
			receiptIndex++;

			subTotal += amount1;

			jtfSubtotal.setText(String.format("$ %.2f", subTotal));
			jlReceipt.updateUI();
		}
		if (jcbMainItem2.isSelected()) {
			receiptList[receiptIndex] = "Fetuccine..........$" + amount2;
			receiptIndex++;

			subTotal += amount2;
			jtfSubtotal.setText(String.format("$ %.2f", subTotal));
			jlReceipt.updateUI();
		}
		if (jcbMainItem3.isSelected()) {
			receiptList[receiptIndex] = "Ravioli..........$" + amount3;
			// receiptIndex++;

			subTotal += amount3;
			jtfSubtotal.setText(String.format("$ %.2f", subTotal));
			jlReceipt.updateUI();
		}
		if (jcbMainItem4.isSelected()) {
			receiptList[receiptIndex] = "Grlc Chkn..........$" + amount4;
			receiptIndex++;

			subTotal += amount4;
			jtfSubtotal.setText(String.format("$ %.2f", subTotal));
			jlReceipt.updateUI();
		}
		if (jcbMainItem5.isSelected()) {
			receiptList[receiptIndex] = "Soup..........$" + amount5;
			receiptIndex++;

			subTotal += amount5;
			jtfSubtotal.setText(String.format("$ %.2f", subTotal));
			jlReceipt.updateUI();
		}
		if (jcbSideItem1.isSelected()) {
			receiptList[receiptIndex] = "Caesar Salad";
			receiptIndex++;
			jlReceipt.updateUI();
		}
		if (jcbSideItem2.isSelected()) {
			receiptList[receiptIndex] = "Side Salad";
			receiptIndex++;
			jlReceipt.updateUI();
		}
		if (jcbSideItem3.isSelected()) {
			receiptList[receiptIndex] = "Breadsticks";
			receiptIndex++;
			jlReceipt.updateUI();
		}
		if (jcbSideItem4.isSelected()) {
			receiptList[receiptIndex] = "Garlic Bread";
			receiptIndex++;
			jlReceipt.updateUI();
		}
		if (jcbSideItem5.isSelected()) {
			receiptList[receiptIndex] = "Doge";
			receiptIndex++;
			jlReceipt.updateUI();
		}
		if (jcbDrinkItem1.isSelected()) {
			receiptList[receiptIndex] = "Soda Pop";
			receiptIndex++;
			jlReceipt.updateUI();
		}
		if (jcbDrinkItem2.isSelected()) {
			receiptList[receiptIndex] = "Beer";
			receiptIndex++;
			jlReceipt.updateUI();
		}
		if (jcbDrinkItem3.isSelected()) {
			receiptList[receiptIndex] = "Milk";
			receiptIndex++;
			jlReceipt.updateUI();
		}
		if (jcbDrinkItem4.isSelected()) {
			receiptList[receiptIndex] = "Water";
			receiptIndex++;
			jlReceipt.updateUI();
		}
		if (jcbDrinkItem5.isSelected()) {
			receiptList[receiptIndex] = "Juice";
			receiptIndex++;
			jlReceipt.updateUI();
		}

	}
}

Just coalesced the many actionListeners into three. Also removed duplicate code from updateReceipt()