Hey guys, I am making A Vending Machine Program and seem to be getting error's when trying to do things outside a class and stops the Program. (Vending machine should keep looping until Quit is typed, and it will display a summary of money and cans left.
******SODA MACHINE TESTER*******
public class SodaMachineTester {
public static void main(String[] args) {
Machine sim = new Machine(); //declare the reference
sim.go(); //start Simulation
sim.stop(); //end SImulation
System.exit(0);
}
}****MACHINE*****
public class Machine {
//The Machine class contains all the references to the objects
private Display dialogbox;
private Counter coin;
private Dispenser dispense;
//Sets up relations so each class can talk to another
Machine(){
coin = new Counter(dispense, dialogbox);
dialogbox = new Display(coin,dispense);
dispense = new Dispenser(coin,dialogbox);
}
//Start up machine
public void go(){
dialogbox.getUserInput();
}
//Stop the Machine
public void stop(){
dialogbox.sayBye();
}
}*****DISPENSER******
import javax.swing.JOptionPane;
public class Dispenser {
//Set the variables
int coke = 5;
int sprite = 3;
String choice;
private Display dialogbox;
Dispenser (Counter c, Display d)
{
dialogbox = d;
}
//Prompt and ask for user to pick a soda
public void chooseSoda()
{
String choice;
choice = JOptionPane.showInputDialog(null, "Coke Or Sprite?");
if(choice.equals((Object)("Coke" )))
coke();
else
sprite();
}
//When the user picks Coke
public void coke()
{
//Error Check if Coke is Sold Out
if (coke == 0){
choice = JOptionPane.showInputDialog(null, "Coke is Sold Out. \n Would you Like A Sprite?");
if(choice.equals((Object)("Yes")))
sprite();
//If they do not want the Sprite
if(choice.equals((Object)("No")))
JOptionPane.showMessageDialog(null,"Here is your Refund of 75 Cents");
}
else
JOptionPane.showMessageDialog(null,"Here is your Coke!");
//Take one coke out of the machine
coke = (coke - 1);
dialogbox.getUserInput();
}
public void sprite()
{
//Error check if Sprite is Sold Out
if (sprite == 0){
choice = JOptionPane.showInputDialog(null, "Sprite is Sold Out. \n Would you Like A Coke?");
if(choice.equals((Object)("Yes")))
coke();
//If they do not want the Coke
if(choice.equals((Object)("No")))
JOptionPane.showMessageDialog(null,"Here is your Refund of 75 Cents");
}
JOptionPane.showMessageDialog(null,"Here is your Sprite!");
// Take one sprite out of the machine
sprite = (sprite - 1);
dialogbox.getUserInput();
}
//Output total Cokes
public void getTotalCokes()
{
JOptionPane.showMessageDialog(null, "The Total Amount Of Cokes Left is "+ coke);
}
//Output total Sprites
public void getTotalSprites()
{
JOptionPane.showMessageDialog(null, "The Total Amount Of Sprites Left is "+ sprite);
}
}*****DISPLAY*****
import javax.swing.JOptionPane;
public class Display {
private Counter coin;
private Dispenser dispense;
Display(Counter c, Dispenser d)
{
coin = c;
dispense = d;
}
public void getUserInput()
{
String choice;
//Ask the user if they want a drink or not
choice = JOptionPane.showInputDialog(null, "Do you want to Buy A Drink Or Quit?");
//Ask for money if they want to buy a drink
if(choice.equals((Object)("Buy A Drink")))
coin.ask();
else
//When Manager Quits
coin.quit();
}
//Prompt at end of machine
public void sayBye(){
JOptionPane.showMessageDialog(null, "Thank you!");
}
}******COUNTER*******
import javax.swing.JOptionPane;
public class Counter {
//Initalize Variables
int coin = 0;
int total = 0;
int nickel = 5;
int dime = 10;
int quarter = 25;
private Display dialogbox;
private Dispenser dispense;
//Set Constructor
Counter (Dispenser d, Display p)
{
dispense = d;
dialogbox = p;
}
//Get Money from person
public void ask()
{
while( total != 75 )
{
String c1= JOptionPane.showInputDialog(null,"Please insert 75 Cents" + "\nCurrent Money In Machine is " + total);
coin = Integer.parseInt(c1);
if ((coin != nickel)&&(coin!=dime)&&(coin != quarter))
{
wrongCoin();
} else
{
total = coin + total;}
JOptionPane.showMessageDialog(null, "Money Inserted " + total + " cents");
}
//When the user inputs 75 cents, prompt them to choose a Soda
if (total == 75)
{
dispense.chooseSoda();
}
}
//If User does not want to take the Soda, give change back
public void getChange()
{
total = total - 75;
}
//If User inputs a wrong coin amount
public void wrongCoin()
{
JOptionPane.showMessageDialog(null, "Incorrect Value");
}
// Set Coin
public void setCoin(Integer c)
{
coin = c;
}
//If Manager decides to quit and view log
public void quit()
{
//Display Total Money
JOptionPane.showMessageDialog(null, "Total Money in Machine is " + total);
//DIsplay Cokes and Sprites
dispense.getTotalCokes();
dispense.getTotalSprites();
}
}