Thread: Please help! Need help with class project!

Sure. I'm supposed to make a Resturaunt Order program which first asks how many people are in the group, then asks each one what they would like for an Appetizer, Entree, Dessert, and Beverages. The selections for each of those sub-menu's have to be put in arrays then the user will be prompted to enter 1,2,3,4,etc. for whichever choice.

So, It would have to be like:

Taking diner #1's order:
then the user selects from the sub menus using the appropriate numbers, and then that code loops for the 2nd, 3rd, 4th, etc. diners.

This is my code so far, it might be a bit messy:

/**
 * Program Name:ResturauntOrder.java
 * Purpose: 
 * Date:Mar 29, 2012
 */
import java.text.DecimalFormat;
import java.util.Scanner;
public class ResturauntOrder
{
 
	public static void main(String[] args)
	{
		// Create Scanner
 
		Scanner input = new Scanner(System.in);
 
		// 1. Display a title
 
		System.out.println("   Welcome to my Café!   \n******************************");
 
		// 2.	Ask the user to enter the number of people in the group
 
		//final int ARRAY_SIZE;
 
		System.out.print("How many people there are in your group: ");
		//ARRAY_SIZE = input.nextInt();
		int peopleInGroup = input.nextInt();
 
		System.out.println("\nEach person will need to order an item from each menu category including \nappetizer, entree, dessert, and beverage.");
		System.out.println("\nI will ask each diner for all their menu selections.");
 
		// 3.	Create and populate eight arrays, two for each sub-menu. 
 
		String[] appetizer = {"","No Selection","Deep Fried Calamari","Soup du Jour","Garden Salad","Garlic Bread"};
 
		double[] appetizerPrice = {0.00,0.00,7.50,4.99,3.99,4.50};
 
 
		String[] entree = {"","No Selection","Rib-Steak","Fettuccini Alfredo","Pan-Fried Sole","Mediterranean Platter","Vegetarian Lasagna"};
 
		double[] entreePrice = {0.00,0.00,15.95,11.25,17.95,13.50,9.00};
 
 
		String[] dessert = {"","No Selection","Ice Cream Sundae","Cheesecake","Chocolate Truffle Cake","Raspberry Mousse"};
 
		double[] dessertPrice = {0.00,0.00,2.95,5.00,6.00,4.50};
 
 
		String[] beverage = {"","No Selection","Water","Juice","Pop","Milk","Coffee","Tea"};
 
		double[] beveragePrice = {0.00,0.00,0.00,2.00,2.00,2.00,1.75,1.75};
 
		// 4.	Declare and initialize a variable to hold the total bill for all the food ordered by the entire group
 
		double totalBill = 0;
 
		// 5.	Next generate the food order by asking the user to select one item from each sub-menu for each diner
 
			// i.	Display the diner number that is currently ordering food
 
 
			int i = 1;
			int [] appetizerChoice = new int [i];
 
			int [] entreeChoice = new int [i];
 
 
			int [] dessertChoice;
 
 
			int [] beverageChoice;
 
 
			String [] appetizerString = {""};
			String [] entreeString = {""};
 
 
 
			[highlight]while(i < peopleInGroup | i == peopleInGroup)
			{
 
				while (appetizerChoice[i] < 1 | appetizerChoice[i] > 5)
				{[/highlight]
 
 
					System.out.println("\nNow taking diner #" + i + "'s order...\n-------------------------------");
 
					System.out.println("\nPlease select one item from the Appetizer menu.");
					System.out.println("1. ** No Selection ** $0.00");
					System.out.println("2. Deep Fried Calamari $7.50");
					System.out.println("3. Soup du Jour $4.99");
					System.out.println("4. Garden Salad $3.99");
					System.out.println("5. Garlic Bread $4.50"); 
 
					System.out.print("\nWhat is your selection?");
 
					appetizerChoice[i] = input.nextInt();
 
				}
 
 
				[highlight]switch(appetizerChoice[i])
			  {
				case 1: appetizerString[i] = appetizer[1];
				break;
 
				case 2:appetizerString[i] = appetizer[2];
		  	totalBill = totalBill + appetizerPrice[2];
				break;
 
				case 3: appetizerString[i] = appetizer[3];
		  	totalBill = totalBill + appetizerPrice[3];
				break;				
 
				case 4:appetizerString[i] = appetizer[4];
		  	totalBill = totalBill + appetizerPrice[4];
				break;
 
				case 5:appetizerString[i] = appetizer[5];
		  	totalBill = totalBill + appetizerPrice[5];
		  	break;
 
				default: System.out.println("You must make a valid choice...");
				}[/highlight]
 
			  while (entreeChoice[i] < 1 | entreeChoice[i] > 6)
			  {
			  	System.out.println("\nPlease select one item from the Entree menu.\n");
			  	System.out.println("1. ** No Selection ** $0.00");
			  	System.out.println("2. Rib-Steak $15.95");
			  	System.out.println("3. Fettuccini Alfredo $11.25");
			  	System.out.println("4. Pan-Fried Sole $17.95");
			  	System.out.println("5. Mediterranean Platter $13.50");
			  	System.out.println("6. Vegetarian Lasagna $9.00");
 
			  	System.out.print("\nWhat is your selection?");
 
 
			  	entreeChoice[i] = input.nextInt();
			  }
 
			  	switch(entreeChoice[i])
			  	{
			  	case 1: entreeString[i] = entree[1];
			  	break;
 
			  	case 2: entreeString[i] = entree[2];
			  	totalBill = totalBill + entreePrice[2];
			  	break;
 
			  	case 3: entreeString[i] = entree[3];
			  	totalBill = totalBill + entreePrice[3];
			  	break;				
 
			  	case 4: entreeString[i] = entree[4];
			  	totalBill = totalBill + entreePrice[4];
			  	break;
 
			  	case 5: entreeString[i] = entree[5];
			  	totalBill = totalBill + entreePrice[5];
			  	break;
 
			  	case 6: entreeString[i] = entree[6];
			  	totalBill = totalBill + entreePrice[6];
			  	break;
 
			  	default: System.out.println("You must make a valid choice...");
			  	}
			  i++;
			  }
 
 
 
 
 
  System.out.println("\nThank You! Your order consists of:\n\t" + appetizerString +
			"\n\t" + entreeString);
	System.out.println("----------------------------------------------------"+
			"\nOrder completed. Your total bill comes to $"+ totalBill +
			"\n----------------------------------------------------");	
 
 
 
 
	}//end main
 
 
}//end class

Also, here are the instructions for the project:

Write a Java program called RestaurantOrder.java that will do all of the following:
1. Display a title

2. Ask the user to enter the number of people in the group

3. Create and populate eight arrays, two for each sub-menu.

There will be four sub-menus: appetizers, entrées, desserts and beverages. For each sub menu you will create a String array of the item descriptions and an array of doubles to hold the prices for each item. For example, if the 4th item in the descriptions array is “Garden Salad”, then the price for this should be the 4th item in the corresponding prices array.

The sub-menu descriptions and prices should be EXACTLY as follows: (I couldn't get these tables to paste properly, I hope you can make sense of them)

Appetizer Sub-Menu Entrée Sub-Menu
# Description Price # Description Price
1
2
3
4
5 No selection
Deep Fried Calamari
Soup du Jour
Garden Salad
Garlic Bread $0.00
$7.50
$4.99
$3.99
$4.50 1
2
3
4
5
6 No selection
Rib-Steak
Fettuccini Alfredo
Pan-Fried Sole
Mediterranean Platter
Vegetarian Lasagna $0.00
$15.95
$11.25
$17.95
$13.50
$9.00

Dessert Sub-Menu Beverage Sub-Menu
# Description Price # Description Price
1
2
3
4
5 No selection
Ice Cream Sundae
Cheesecake
Chocolate Truffle Cake
Raspberry Mousse $0.00
$2.95
$5.00
$6.00
$4.50 1
2
3
4
5
6
7 No selection
Water
Juice
Pop
Milk
Coffee
Tea $0.00
$0.00
$2.00
$2.00
$2.00
$1.75
$1.75


4. Declare and initialize a variable to hold the total bill for all the food ordered by the entire group. This will be used like a running total as food items are selected for each diner.

5. Next generate the food order by asking the user to select one item from each sub-menu for each diner.
a. Code a loop that will iterate once for each diner in the group. Within this loop you will:
i. Display the diner number that is currently ordering food.
ii. Display each sub-menu one at a time and let the diner make a selection from each by inputting an item number as shown in the sub-menus in step 3. Your program should validate each input (item numbers entered). Add the price of each item selected to the total price variable.
iii. Once the current diner’s selections have been made display a list of all the items they selected. Don’t display the item if it is the first option: No selection.

6. Finally, display the total price for all the food ordered by the group. Don’t add tax or a tip.

7. All prices and the amount of the final bill should be displayed in standard dollars and cents format like $9.99 with exactly two decimal places.

I spotted this slight problem with the initializing of "i" and two of your array variables:

int i = 1;
int [] appetizerChoice = new int [i];
 
			int [] entreeChoice = new int [i];

Int "i" should start at 0. Also, instead of having the size of the arrays be "i", their size should be "peopleInGroup".

With the change to "i", the code in your first hightlight should be changed as follows:

while(i < peopleInGroup)
			{
 
				while (appetizerChoice[i] < 1 || appetizerChoice[i] > 5)
				{

After those fixes, the code looks like it should work. It seems like you're on the right track for your assignment.