Question

Overview

JAVA LANGUAGE PROBLEM:

The owner of a restaurant wants a program to manage online orders that come in. This program will require multiple classes. Summary class, customer class, order class and the driver class.

Summary class

This class will keep track of the cost of the order and output a summary, which includes the total for the order. The methods in this class are static. There are no instance variables, and instead uses an Order object that is passed in to the methods.

• Constants:
  • Tax rate = 7%
  • Deliver charge = 3.00
  • Minimum order= 20.0
• Instance variables: None
  • Type of order
• Methods:
  • calculateSubtotal: Receives an Order object and determines by subtotal by multiplying the cost of each item by the count of each item. Returns the total.
  • calculateTax: Receives an Order object and returns the total tax. This method will call the calculateSubtotal method and then multiply the tax rate by the total returned from method call.
  • calculateDeliveryCharge: This method receives an Order object and determines the delivery charge. If the order is for delivery, then the delivery charge will be returned if the order is less than the minimum order. Otherwise, it returns 0.
  • calculateTotal: This method receives an Order object and returns the result of adding the calculateSubtotal, calculateTax and calculateDeliveryCharge values returned.
  • outputSummary: This method receives an Order object and returns a formatted String with total results. See sample run for output.

Order Class

This class will keep track of a persons order. It will also store the total number of orders made for the day, as well as the total amount collected for the day.

• Constants:
  • Burger- 5.0
  • Fries- 2.50
  • Taco- 2.0
  • Nachos- 6.50
  • Chicken sandwich- 5.25
  • Small drink- 1.25
  • Medium drink – 1.75
  • Large drink – 2.25
• Instance variables:
  • a count for each item on the menu
  • boolean variable to indicate whether the order is for delivery
• Static variables:
  • count will keep track of how many orders are taken
  • total will keep track of the total dollar amount of the orders
• Methods:
  • Default constructor: Must increment the count by one.
  • Custom constructor that accepts values for all the instance variables. Use constructor chaining and update all the values.
  • Getters and setters for all of the instance variables
  • toString: This method should output a summary of the items ordered. See the sample run for the format. However, the list should not print out items where the count is zero

Customer class

This class will store the information needed to identify the customer who has placed the order.

• Instance Variables:
  • fullname
  • address
  • phone number
• Methods:
  • Custom constructor that accepts all three instance variable values
  • Getter for name and address and set for name. Do not complete getters and setters for the only variables
  • toString: This method will output the name and phone number and the address only if it is not null, since only delivery requires an address

Driver class

This class will present the user with menu options and then determine actions based on the user selections.

Instance variables:

• Scanner
• small, medium and large drinks

Methods:

• outputResults: This method receives an Order object and a Customer object and outputs the details of the order
• getCustomerInfo: This method accepts an integer value that represents the delivery choice and based on that delivery choice collects information about the user and creates a customer object. If the delivery choice is pickup then get a name and phone number. If it is delivery, then also collect the address.
  • Note that in the delivery option, you also want to indicate how long to expect for delivery. To determine this, retrieve a random number from 30-60.
• determineDelivery: This method displays the options for pickup or delivery and accepts and returns the users choice.
• drinkOptions: This method will determine the number of each size of drink when a user selects drink from the menu. It will then output a summary of the sizes chosen, not displaying any items that are zero.
• displayMenu(): This method will display the menu of options
• drinkMenu(): This method will display the menu of drink options
• endOfDay: This method outputs the total number of orders and total amount collected at the end of the day, once the user has selected option 3 to close for the day.
• startupMenu: This method displays the menu to start and end the day.

Main Method: You will use the main method to continually prompt the user for the startupMenu and then as long as the user does not choose to end the day, the user will be presented with a menu to place their order. You will need to continually display the menu until the user has finished the order, at which you will end the order and display the results.

All input must be validated to ensure that input is of the correct datatype, as well as in the correct range.

V

Sample Run #1:

Which do you want to do:

1- Begin the day

2- Continue

3- Close for the day

1

Welcome to SnackShack.

Choose the item you would like to order:

1-Burger              - $5.00

2-Chicken Sandwich         - $5.25

3-Taco                     - $2.00

4-Nachos              - $6.50

5-Fries               - $2.50

6-Drink

7-Finished with order

1

Burger - $5.00 each

How many do you want? 2

Choose your next item:

1-Burger              - $5.00

2-Chicken Sandwich         - $5.25

3-Taco                     - $2.00

4-Nachos              - $6.50

5-Fries               - $2.50

6-Drink

7-Finished with order

7

End of order

Is this for pickup or delivery?

1- Pickup

2- Delivery

1

One last thing! What should we call you? Tonya

And a phone number, just in case we have questions: 3094567890

Your order is:

Burgers: 2

Name: Tonya

Phone: 3094567890

Total for this order is:

Subtotal: $10.00

Tax:       $ 0.70

Total:          $10.70

Which do you want to do:

1- Begin the day

2- Continue

3- Close for the day

2

Total orders received today 1

Total amount collected today $10.70Welcome to SnackShack.

Choose the item you would like to order:

1-Burger              - $5.00

2-Chicken Sandwich         - $5.25

3-Taco                     - $2.00

4-Nachos              - $6.50

5-Fries               - $2.50

6-Drink

7-Finished with order

5

Fries - $2.50

How many do you want? 5

Choose your next item:

1-Burger              - $5.00

2-Chicken Sandwich         - $5.25

3-Taco                     - $2.00

4-Nachos              - $6.50

5-Fries               - $2.50

6-Drink

7-Finished with order

6

How many small drinks do you want? a

Invalid input. Please enter a number!

How many do you want? Invalid input. Please enter a number!

How many do you want? 3

How many medium drinks do you want?

2

How many large drinks do you want?

1

You requested the following drinks:

Large: 1

Medium: 2

Small: 3

Choose your next item:

1-Burger              - $5.00

2-Chicken Sandwich         - $5.25

3-Taco                     - $2.00

4-Nachos              - $6.50

5-Fries               - $2.50

6-Drink

7-Finished with order

7

End of order

Is this for pickup or delivery?

1- Pickup

2- Delivery

2

One last thing! What should we call you? Brian

Where should this be delivered? 123 Main St.

And a phone number, just in case we have questions: 3095678901

You can expect delivery in 52 minutes

Your order is:

Fries: 5

Small Drinks: 3

Medium Drinks: 2

Large Drinks: 1

Name: Brian

Address: 123 Main St.

Phone: 3095678901

Total for this order is:

Subtotal: $22.00

Tax:       $ 1.54

Total:          $23.54

Which do you want to do:

1- Begin the day

2- Continue

3- Close for the day

3

Total orders received today 2

Total amount collected today $34.24

Answer 1

Code:-

import java.util.Random;
import java.util.Scanner;

public class Main {
//Instance variables
public static Scanner s = new Scanner(System.in);

public static Order ord;

//This method receives order & customer object & show their information
public static void outputResults(Order order, Customer customer){
Summary s = new Summary();
s.calculateSubtotal(order);
s.calculateTax(order);
s.calculateTotal(order);
System.out.println(customer.toString()+"\n"+order.toString()+"\n"+"Order Summary:"+s.outputSummary(ord));
}

//it receives an integer which will determine delivery choice 1 means yes , 0 (pickup) means no
public static void getCustomerInfo(int deliveryChoice, Order order){

Customer c;
//If pickup
if(deliveryChoice == 0){
//collecting information from customer
System.out.print("\nEnter your name: ");
String name = s.next();
System.out.print("Enter your phone number: ");
String phoneNum = s.next();

//create a customer object with address null because he did not request for delivery
c= new Customer(name, null, phoneNum);
}
else{
//If he wants delivery
//collecting information from customer
System.out.print("\nEnter your name: ");
String name = s.next();
System.out.print("Enter your phone number: ");
String phoneNum = s.next();
System.out.print("Enter your address: ");
String address = s.next();
c= new Customer(name , address , phoneNum);

//generate random number for delivery time
Random r= new Random();
System.out.println("The delivery time is "+(r.nextInt(60-30)+30)+" minutes");
}
//Now showing output
outputResults(order, c);
}

//Will get the choice from user either delivery or pickup
public static int determineDelivery(){

System.out.println("\nPress '0' for pickup");
System.out.println("Press '1' for Delivery");
int opt = s.nextInt();

return opt;
}

public static void displayMenu(){
Scanner s = new Scanner(System.in);

System.out.println("\n1.Burger");
System.out.println("2.Fries");
System.out.println("3.Taco");
System.out.println("4.Nachos");
System.out.println("5.Chicken Sandwiches");

System.out.print("\nHow many Burgers: ");
int burger = s.nextInt();

System.out.print("How many Fries: ");
int fries = s.nextInt();

System.out.print("How many Tacos: ");
int tacos = s.nextInt();

System.out.print("How many Nachos: ");
int nachos = s.nextInt();

System.out.print("How many Chicken Sandwiches: ");
int csandwich = s.nextInt();
//Default keep no delivery
Boolean isDeliver = false;
int deliver=determineDelivery();
//If he wants means presses '1', he wants delivery
if(deliver == 1){
isDeliver = true;
}

//Creating an Order object
ord = new Order(burger, fries, tacos, nachos, csandwich, 0, 0, 0,isDeliver);

//get customer Info & showing result
getCustomerInfo(deliver, ord);

}

public static void drinkMenu(){

System.out.println("\n1.Small Drinks");
System.out.println("2.Medium Drinks");
System.out.println("3.Large Drinks");

System.out.print("How many small drinks: ");
int small = s.nextInt();
System.out.print("How many medium drinks: ");
int medium = s.nextInt();
System.out.print("How many large drinks: ");
int large = s.nextInt();

//Default keep no delivery
Boolean isDeliver = false;
int deliver=determineDelivery();
//If he wants means presses '1', he wants delivery
if(deliver == 1){
isDeliver = true;
}
ord = new Order(0, 0 ,0 ,0, 0, small, medium , large, isDeliver);

//get customer Info & showing result
getCustomerInfo(deliver, ord);
}

//outputs total number of orders
public static void endOfDay(Order order){
System.out.println("\nNumber of Orders at end of the day: "+order.getNo_of_orders());
}

public static void startupMenu(){
//showing menu until user has not selected for end of day
Scanner s = new Scanner(System.in);
int opt=0;
while (!(opt==3)){
System.out.println("\n1.Eatable Menu");
System.out.println("2.Drink Menu");
System.out.println("3.End of Day");

opt = s.nextInt();

if(opt == 1){
displayMenu();
}
else if(opt == 2){
drinkMenu();
}
else if(opt == 3){
endOfDay(ord);
}
else{
System.out.println("Invalid option");
}
}
}
public static void main(String[] args) {

System.out.println("\n\t\t\t----------------------Menu-----------------------------");
//Just call Startup Menu
startupMenu();
}
}

class Customer{

//Instance variables

private String fullName;
private String address;
private String phoneNum;

//Constructor

public Customer(String fullName, String address, String phoneNum) {
this.fullName = fullName;
this.address = address;
this.phoneNum = phoneNum;
}

//Getter & setters

public String getFullName() {
return fullName;
}

public String getAddress() {
return address;
}

public void setFullName(String fullName) {
this.fullName = fullName;
}

public void setAddress(String address) {
this.address = address;
}

//toString method that would show name & phone number and address only if it is not null

@Override
public String toString() {
if(!(address == null)){
//If address is not null, return the address also
return "\n\nCustomer Name: "+fullName+"\n"+"Address: "+address+"\n"+"Phone num: "+phoneNum;
}
else{
return "\n\nCustomer Name: "+fullName+"\n"+"Phone num: "+phoneNum;
}
}
}

class Order{
//Defining constants

private static final double burgerPrice = 5.0;
private static final double friesPrice = 2.50;
private static final double tacoPrice = 2.0;
private static final double nachosPrice = 6.50;
private static final double chickenSandwichPrice = 5.25;

private static final double smallDrinkPrice = 1.25;
private static final double mediumDrinkPrice = 1.75;
private static final double largeDrinkPrice = 2.25;

//Instance variables----

private int no_of_Burgers;
private int no_of_Fries;
private int no_of_Tacos;
private int no_of_Nachos;
private int no_of_ChickenSandwiches;
private int no_of_SmallDrinks;
private int no_of_MediumDrinks;
private int no_of_LargeDrinks;

Boolean isDelivery;

//static variables

private static int no_of_orders;
private static double total_dollar_amount;

//Constructor
public Order(){
//increment count of each item by 1
no_of_Burgers++;
no_of_Fries++;
no_of_Tacos++;
no_of_Nachos++;
no_of_ChickenSandwiches++;
no_of_SmallDrinks++;
no_of_MediumDrinks++;
no_of_LargeDrinks++;

no_of_orders++;
}
//Custom Constructor

public Order(int no_of_Burgers, int no_of_Fries, int no_of_Tacos, int no_of_Nachos, int no_of_ChickenSandwiches, int no_of_SmallDrinks, int no_of_MediumDrinks, int no_of_LargeDrinks, Boolean isDelivery) {

this();

this.no_of_Burgers = no_of_Burgers;
this.no_of_Fries = no_of_Fries;
this.no_of_Tacos = no_of_Tacos;
this.no_of_Nachos = no_of_Nachos;
this.no_of_ChickenSandwiches = no_of_ChickenSandwiches;
this.no_of_SmallDrinks = no_of_SmallDrinks;
this.no_of_MediumDrinks = no_of_MediumDrinks;
this.no_of_LargeDrinks = no_of_LargeDrinks;
this.isDelivery = isDelivery;
}

//Setters & Getters for all instance variables

public static double getBurgerPrice() {
return burgerPrice;
}

public static double getFriesPrice() {
return friesPrice;
}

public static double getTacoPrice() {
return tacoPrice;
}

public static double getNachosPrice() {
return nachosPrice;
}

public static double getChickenSandwichPrice() {
return chickenSandwichPrice;
}

public static double getSmallDrinkPrice() {
return smallDrinkPrice;
}

public static double getMediumDrinkPrice() {
return mediumDrinkPrice;
}

public static double getLargeDrinkPrice() {
return largeDrinkPrice;
}

public int getNo_of_Burgers() {
return no_of_Burgers;
}

public void setNo_of_Burgers(int no_of_Burgers) {
this.no_of_Burgers = no_of_Burgers;
}

public int getNo_of_Fries() {
return no_of_Fries;
}

public void setNo_of_Fries(int no_of_Fries) {
this.no_of_Fries = no_of_Fries;
}

public int getNo_of_Tacos() {
return no_of_Tacos;
}

public void setNo_of_Tacos(int no_of_Tacos) {
this.no_of_Tacos = no_of_Tacos;
}

public int getNo_of_Nachos() {
return no_of_Nachos;
}

public void setNo_of_Nachos(int no_of_Nachos) {
this.no_of_Nachos = no_of_Nachos;
}

public int getNo_of_ChickenSandwiches() {
return no_of_ChickenSandwiches;
}

public void setNo_of_ChickenSandwiches(int no_of_ChickenSandwiches) {
this.no_of_ChickenSandwiches = no_of_ChickenSandwiches;
}

public int getNo_of_SmallDrinks() {
return no_of_SmallDrinks;
}

public void setNo_of_SmallDrinks(int no_of_SmallDrinks) {
this.no_of_SmallDrinks = no_of_SmallDrinks;
}

public int getNo_of_MediumDrinks() {
return no_of_MediumDrinks;
}

public void setNo_of_MediumDrinks(int no_of_MediumDrinks) {
this.no_of_MediumDrinks = no_of_MediumDrinks;
}

public int getNo_of_LargeDrinks() {
return no_of_LargeDrinks;
}

public void setNo_of_LargeDrinks(int no_of_LargeDrinks) {
this.no_of_LargeDrinks = no_of_LargeDrinks;
}

public Boolean getDelivery() {
return isDelivery;
}

public void setDelivery(Boolean delivery) {
isDelivery = delivery;
}

public static int getNo_of_orders() {
return no_of_orders;
}

public static void setNo_of_orders(int no_of_orders) {
Order.no_of_orders = no_of_orders;
}

public static double getTotal_dollar_amount() {
return total_dollar_amount;
}

public static void setTotal_dollar_amount(double total_dollar_amount) {
Order.total_dollar_amount = total_dollar_amount;
}

@Override
public String toString() {

//If any eatable is empty, just show drinks
if(no_of_Burgers == 0){
return "\nOrder\n"+"No of Small Drinks: "+no_of_SmallDrinks+
"\nNo of Medium Drinks: "+no_of_MediumDrinks+
"\nNo of Large Drinks: "+no_of_LargeDrinks+"\n";
}
else{

return "\nOrder:" +
"\nno_of_Burgers=" + no_of_Burgers +
"\nno_of_Fries=" + no_of_Fries +
"\nno_of_Tacos=" + no_of_Tacos +
"\nno_of_Nachos=" + no_of_Nachos +
"\nno_of_ChickenSandwiches=" + no_of_ChickenSandwiches+"\n";
}
}
}

class Summary{

//Constants

private static final double taxRate = 0.07;
private static final double deliveryCharge = 3.00;
private static final double minimumOrder = 20.0;

//Methods

public double calculateSubtotal(Order o){

//We would determine subtotal by multiplying the cost of each item by the count of that item

return (o.getBurgerPrice()*o.getNo_of_Burgers()) + (o.getFriesPrice()*o.getNo_of_Fries()) + (o.getTacoPrice()*o.getNo_of_Tacos())
+(o.getNachosPrice()*o.getNo_of_Nachos()) + (o.getChickenSandwichPrice()*o.getNo_of_ChickenSandwiches())
+(o.getSmallDrinkPrice()*o.getNo_of_SmallDrinks()) + (o.getMediumDrinkPrice()*o.getNo_of_MediumDrinks()) +
(o.getLargeDrinkPrice()*o.getNo_of_LargeDrinks());
}

public double calculateTax(Order o){

//It will call the calculateSubtotal method and then multiply the tax rate by the total returned from that method

return calculateSubtotal(o)*taxRate;
}

public double calculateDeliveryCharge(Order o){

//check if that customer is requested for delivery, if so show the charge of delivery
//Also check if the order is less than minimum order

if(o.getDelivery() && calculateSubtotal(o) < minimumOrder){
return deliveryCharge;
}
else{
return 0;
}
}

public double calculateTotal(Order order){

//calculate total by adding subtotal , tax and corresponding delivery charges

return calculateSubtotal(order) + calculateTax(order) + calculateDeliveryCharge(order);
}

public String outputSummary(Order o){
return "\nSubtotal: $"+ calculateSubtotal(o)
+"\n"+"Tax: $"+calculateTax(o)
+"\n"+"Delivery Charges: $"+calculateDeliveryCharge(o)
+"\n"+"Total Price: $"+calculateTotal(o)+"\n\n";
}
}

Output Screenshots:-