I'm at my wits end!!! Can't find the problem!!!

Question

okay, I've got the code written for a vending machine program. i have a text file that loads in field variables to a product class, a money class that handles the basic functions of money handling methods, and a vending machine applet. the files compile fine, but they don't execute. i get an error: nosuchmethod error: main, you know the kind. i don't have a main because i'm trying to run it as an applet, but it won't run when i use appletviewer, it just does't do anything! This is going to be a tough one. But i swear up and down that i will literally find some way to pay the person who can find what the heck is wrong with the code...so, here it is, and i know it's long, but this is the final project in my java class at college, and i can't find where i'm going wrong.
the vendingmachine:
import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.text.NumberFormat;
import java.util.StringTokenizer;
import utilities.CashIn;
import utilities.Product;
public class VendingMachine extends Applet implements ActionListener {
private Font boldSerif16 = new Font("Serif",Font.BOLD,16);
private Font boldSerif24 = new Font("Serif",Font.BOLD,24);
private Font boldItalicSerif24 = new Font("Serif",Font.BOLD+Font.ITALIC,24);
private Font boldItalicSerif13 = new Font("Serif",Font.BOLD+Font.ITALIC,13);
private Font boldItalicSerif40 = new Font("Serif",Font.BOLD+Font.ITALIC,40);
// Mode flag.
private int mode = 0;
// Panels for the buttons
private Panel mainPanel = new Panel();
private Panel cashPanel = new Panel();
private Panel selPanel = new Panel();
private Panel maintPanel = new Panel();
// Product selection panel buttons
private Button selBtn[] = new Button[6];
// Cash customer puts in machine panel buttons
private Button viewC = new Button("View The Products");
private Button quit = new Button("Quit");
private Button bNickle = new Button("Nickel");
private Button bDime = new Button("Dime");
private Button bQuarter = new Button("Quarter");
private Button b$Paper = new Button("$1 Paper");
private Button b$Coin = new Button("$1 Coin");
private Label lCredit = new Label(" Credit:");
private Label lMsg = new Label("");
private Button bChange = new Button("Change Return");
private Button purchase = new Button("Purchase");
private Button maintenance = new Button("Maintenance");
private Product productForSale [];
private CashIn changeOH;
private int $collected = 0;
private double total$In = 0.00;
private NumberFormat nf;
private Image pic;
private Image picAnim;
private int prodSel = 999;
private String line;
private String f[] = new String[8];
private int tokenCount;
private int int3, int4, int5, int6, int7;
private double dbl4;
private StringTokenizer strings;
private int dispense = 99;
public void init()
{  setLayout(new BorderLayout());
productForSale = new Product[6];
try
{  BufferedReader inPut = new BufferedReader(new FileReader("Startup.txt"));
while ((line=inPut.readLine()) != null)
{  strings = new StringTokenizer(line,",");
tokenCount = strings.countTokens();
// Loop thru and retrieve each data element.
for (int i=0; i<tokenCount; i++)
f[i] = strings.nextToken();
// Load the money.
if (f[0].compareTo("M") == 0)
{  int3 = Integer.parseInt(f[3]);
int4 = Integer.parseInt(f[4]);
int5 = Integer.parseInt(f[5]);
int6 = Integer.parseInt(f[6]);
int7 = Integer.parseInt(f[7]);
changeOH = new CashIn(f[1],f[2],int3,int4,int5,int6,int7);
// Load the products.
if (f[0].compareTo("P") == 0)
{  int3 = Integer.parseInt(f[3]);
dbl4 = (new Double(f[4])).doubleValue();
int5 = Integer.parseInt(f[5]);
int6 = Integer.parseInt(f[6]);
int7 = Integer.parseInt(f[7]);
productForSale[int3] = new Product(f[1],f[2],dbl4,int5,int6,int7);
inPut.close();
catch(IOException e)
{  e.printStackTrace();
setBackground(Color.blue);
setForeground(new Color(120,0,120));
setFont(boldSerif16);
cashPanel.setLayout(new GridLayout(10,1));
cashPanel.add(viewC);
cashPanel.add(quit);
cashPanel.add(bNickle);
cashPanel.add(bDime);
cashPanel.add(bQuarter);
cashPanel.add(b$Paper);
cashPanel.add(b$Coin);
cashPanel.add(lCredit);
cashPanel.add(lMsg);
cashPanel.add(bChange);
add(cashPanel,"East");
selPanel.setLayout(new GridLayout(1,6));
for (int i=0; i<6; i++)
{  selBtn[i] = new Button(productForSale.getName());
selPanel.add(selBtn[i]);
add(selPanel,"South");
setBackground(Color.black);
viewC.addActionListener(this);
quit.addActionListener(this);
bNickle.addActionListener(this);
bDime.addActionListener(this);
bQuarter.addActionListener(this);
b$Paper.addActionListener(this);
b$Coin.addActionListener(this);
bChange.addActionListener(this);
nf = NumberFormat.getCurrencyInstance();
for (int i=0; i<6; i++)
selBtn[i].addActionListener(this);
} // =======>> END OF INIT METHOD
// ** PAINT METHOD **
public void paint(Graphics g)
{  int xVal = 35;
int yVal = 85;
int xValAnim = 0;
int yValAnim = 0;
int c = 0;
// Paint the product pictures on the vending machine.
g.setColor(Color.cyan);
g.setFont(boldItalicSerif24);
g.drawString(changeOH.getLogo1(),115,40);
g.setFont(boldItalicSerif13);
g.drawString(changeOH.getLogo2(),200,60);
for (int z=0; z<2; z++)
{  xVal = 35;
yVal = 85;
c = 0;
g.setColor(Color.black);
g.fillRect(xVal,yVal,500,350);
g.setColor(Color.yellow);
for (int i=0; i<2; i++)
{  for (int j=0; j<3; j++)
{  g.setFont(boldSerif16);
g.drawString(nf.format(productForSale[c].getPrice()),xVal+45,yVal-5);
pic = getImage(getCodeBase(),productForSale[c].getPic());
g.drawImage(pic,xVal,yVal,null);
// If product is dispensed get ready to animate.
if (c == dispense)
{  xValAnim = xVal;
yValAnim = yVal;
picAnim = pic;
xVal = xVal + 170;
c++;
yVal = yVal + 160;
xVal = 35;
// If product is dispensed, animate it.
if (dispense < 99)
{  for (int y=0; y<40; y++)
{  g.setColor(Color.black);
g.fillRect(xValAnim,yValAnim-9,125,125);
g.setColor(Color.yellow);
g.drawImage(picAnim,xValAnim,yValAnim,null);
yValAnim = yValAnim + 10;
pause(3);
dispense = 99;
if (mode == 0)
{  pic = getImage(getCodeBase(),"OutStock.gif");
g.drawImage(pic,300,300,null);
g.setColor(Color.black);
g.fillRect(1,1,500,300);
g.setColor(Color.pink);
g.setFont(boldItalicSerif40);
g.drawString(changeOH.getLogo1(),10,150);
g.setFont(boldItalicSerif24);
g.drawString(changeOH.getLogo2(),160,250);
mode++;
} // =======>> END OF PAINT METHOD
// ** ACTIONPERFORMED METHOD **
public void actionPerformed(ActionEvent event)
{  Object source = event.getSource();
lMsg.setText(" Enter up to $1.00");
// Customer puts money in the vending machine.
// Customer paid a nickle
if (source == bNickle && $collected < 96)
{  changeOH.nickleIn();
$collected = $collected + 5;
// Customer paid a dime
if (source == bDime && $collected < 91)
{  changeOH.dimeIn();
$collected = $collected + 10;
// Customer paid a quarter
if (source == bQuarter && $collected < 76)
{  changeOH.quarterIn();
$collected = $collected + 25;
// Customer paid a paper dollar
if (source == b$Paper && $collected == 0)
{  changeOH.dollarPaperIn();
$collected = $collected + 100;
// Customer paid a coin dollar
if (source == b$Coin && $collected == 0)
{  changeOH.dollarCoinIn();
$collected = $collected + 100;
// Customer makes their product selection.
for (int i=0; i<6; i++)
{  if (source == selBtn[i])
// Do nothing if customer selects item that isn't on-hand.
if (productForSale[i].getOnHand() == 0)
repaint();
// We have product on-hand.
else
{  prodSel = i;
// Tell customer to add more money if they don't have
// enough in the machine to handle the purchase.
if ($collected < (int) (productForSale[i].getPrice() * 100))
{ lMsg.setText("    Insert Money");
// Customer has enough money in machine to cover purchase.
else
{  // Take cost of item from customer's money
dbl4 = productForSale[i].getPrice() * 100;
int4 = changeOH.giveChange($collected - (int)dbl4,0);
// Tell customer to put exact amount in the machine
// because there isn't enough change to handle purchase.
if (int4 == 9)
{  lMsg.setText("Exact Amount Only!");
// **** Here the purchase was made and committed. ****
else
{  total$In = productForSale[i].getPrice() * 100;
$collected = $collected - (int) total$In;
productForSale[i].sellProduct();
dispense = i;
repaint();
// If the last product item was sold, set picture to OutStock.gif.
if (productForSale[i].getOnHand() <= 0)
productForSale[i].setOutOfStock();
if ((source == bChange || source == quit) && $collected > 0)
{  $collected = changeOH.giveChange($collected,1);
// Here we save the machine info file when customer asks
// for their change back or quits the machine.
// Customer has selected to Quit the vending machine program.
// Quit the program.
if (source == quit)
System.exit(0);
// These commands set up variables to show how much money
// the customer has in the machine.
total$In = $collected;
total$In = total$In / 100;
lCredit.setText(" Credit: " + nf.format(total$In));
repaint();
} // =======>> END OF ACTIONPERFORMED METHOD
// ** PAUSE METHOD **
public void pause(int i)
{  for(long l = System.currentTimeMillis() + (long) i; System.currentTimeMillis() < l;);
This is the product class:
package utilities;
import java.io.*;
import java.util.StringTokenizer;
public class Product {
private String name;
private String image;
private String picUsed;
private double price;
private int onHand;
private int sold;
private int maint;
public Product(String n, String i, double p, int o, int s, int m)
{  name    = n;
image = i;
picUsed = i;
price = p;
onHand = o;
sold = s;
maint = m;
// Reset picture used when product is out of stock.
public void setOutOfStock()
{  picUsed  = "OutStock.gif";
// Get product information
public String getName()
{  return name;
public String getImage()
{  return image;
public String getPic()
{  return picUsed;
public double getPrice()
{  return price;
public int getOnHand()
{  return onHand;
public int getQtySold()
{  return sold;
public int getMaintDate()
{  return maint;
// Sell one of the product.
public void sellProduct()
{  onHand--;
sold++;
// Set the product values.
public void setName(String n)
{  name = n;
public void setImage(String i)
{  image   = i;
picUsed = i;
public void setPrice(double p)
{  price = p;
public void setOnHand(int o)
{  onHand = o;
public void setQtySold(int s)
{  sold = s;
public void setMaintDate(int m)
{  maint = m; }
The money class:
package utilities;
import java.math.*;
public class CashIn {
private String logo1;
private String logo2;
private int numProd;
private int nickles;
private int dimes;
private int quarters;
private int dollarsP;
private int dollarsC;
private int money;
private double moneyVal;
private int amtToChange = 0;
private int hNickle;
private int hDime;
private int hQuarter;
private int hpDollar;
private int hcDollar;
public CashIn(String l1, String l2, int p, int q, int d, int n, int dP)
{  logo1    = l1;
logo2 = l2;
numProd = p;
quarters = q;
dimes = d;
nickles = n;
dollarsP = dP;
dollarsC = 0;
money = (n * 5) + (d * 10) + (q * 25) + (dP * 100);
// Get total of money in machine.
public double getCashIn()
{  moneyVal = money;
moneyVal = moneyVal / 100;
return moneyVal;
// Get machine record information.
public String getLogo1()
{  return logo1;
public String getLogo2()
{  return logo2;
public int getNumProd()
{  return numProd;
public int getNickles()
{  return nickles;
public int getDimes()
{  return dimes;
public int getQuarters()
{  return quarters;
public int getDollarPaper()
{  return dollarsP;
public int getDollarCoins()
{  return dollarsC;
// Money comes into the machine
public void nickleIn()
{  nickles++;
money = money + 05;
public void dimeIn()
{  dimes++;
money = money + 10;
public void quarterIn()
{  quarters++;
money = money + 25;
public void dollarPaperIn()
{  dollarsP++;
money = money + 100;
public void dollarCoinIn()
{  dollarsC++;
money = money + 100;
// Give the customer their change.
public int giveChange(int custMoney, int mode)
{  hNickle   = nickles;
hDime = dimes;
hQuarter = quarters;
hpDollar = dollarsP;
hcDollar = dollarsC;
amtToChange = custMoney / 100;
for (int i=0; i<amtToChange; i++)
{  // Give change in dollar coin if possible
if (hcDollar > 0)
{  hcDollar--;
custMoney = custMoney - 100;
// or else give change in paper dollar
else
{  if (hpDollar > 0)
{  hpDollar--;
custMoney = custMoney - 100;
amtToChange = custMoney / 25;
for (int i=0; i<amtToChange; i++)
{  if (hQuarter > 0)
{  hQuarter--;
custMoney = custMoney - 25;
amtToChange = custMoney / 10;
for (int i=0; i<amtToChange; i++)
{  if (hDime > 0)
{  hDime--;
custMoney = custMoney - 10;
amtToChange = custMoney / 5;
if (amtToChange > hNickle)
{  mode = 9;
for (int i=0; i<amtToChange; i++)
{  hNickle--;
custMoney = custMoney - 5;
if (mode == 1)
{  nickles   = hNickle;
dimes = hDime;
quarters = hQuarter;
dollarsP = hpDollar;
dollarsC = hcDollar;
money = money - custMoney;
if (mode == 9) custMoney = 9;
return custMoney;
the startup text:
p,Fritos,Images/FritoLay.gif,
m,$.50,
p,Dr. Pepper,Images/Dr.Pepper.gif,
m,$.60,
p,Pepsi,Images/Pepsi.gif,
m,$.60,
p,Coke,Images/CocaCola.gif,
m,$.60,
p,Seven-Up,Images/7-Up.gif,
m,$.60,
p,Sprite,Images/Sprite.gif,
m,$.60,
c,10,20,40,

Answer 1

S/he's only offering six Dukes here:
http://forum.java.sun.com/thread.jsp?forum=54&thread=469450&start=0&range=15#2169975
This problem has been done before. Break this down into something simpler. You don't need an applet. Just do it on the command line. You don't need a database. Just create a flat file if you need some persistent data. Do the simple thing first, then build out from there.
Click on the special tokens link up above and learn how to use [ code][ code] tags.
Your code is a big, unreadable mess. You've got pare this down into something sensible. If you can't understand it, it's unreasonable to expect someone on this forum to wade through all of that. - MOD