Question

Parallel Arrays

Summary

In this lab, you use what you have learned about parallel arrays to complete a partially completed Java program. The program should either print the name and price for a coffee add-in from the Jumpin’ Jive coffee shop or it should print the message: "Sorry, we do not carry that.". Read the problem description carefully before you begin. The data file provided for this lab includes the necessary variable declarations and input statements. You need to write the part of the program that searches for the name of the coffee add-in(s) and either prints the name and price of the add-in or prints the error message if the add-in is not found.

Instructions

1. Study the prewritten code to make sure you understand it.
2. Write the code that searches the array for the name of the add-in ordered by the customer.
3. Write the code that prints the name and price of the add-in or the error message, and also write the code that prints the total order cost.
4. Execute the program using the following data:

 Cream
Caramel
Whiskey
chocolate
Chocolate
Cinnamon
Vanilla 

// JumpinJive.java - This program looks up and prints the names and prices of coffee orders.
// Input: Interactive.
// Output: Name and price of coffee orders or error message if add-in is not found.

import java.util.Scanner;

public class JumpinJive
{
   public static void main(String args[]) throws Exception
   {
      // Declare variables.
      String addIn;        // Add-in ordered by customer.
      final int NUM_ITEMS = 5; // Named constant
      // Initialized array of add-ins.
      String addIns[] = {"Cream", "Cinnamon", "Chocolate", "Amaretto", "Whiskey"};
      // Initialized array of add-in prices.
      double addInPrices[] = {.89, .25, .59, 1.50, 1.75};
      boolean foundIt;
      int x;           // Loop control variable.
      double orderTotal = 2.00; // All orders start with a 2.00 charge

      // Get user input.
      Scanner input = new Scanner(System.in);
      System.out.print("Enter coffee add-in or XXX to quit: ");
      addIn = input.nextLine();
      // Write the rest of the program here.
    
   } // End of main() method.
} // End of JumpinJive class.

How to make this work?

Answer 1

import java.util.Scanner;

public class JumpinJive
{
public static void main(String args[]) throws Exception
{
// Declare variables.
String addIn; // Add-in ordered by customer.
final int NUM_ITEMS = 5; // Named constant
// Initialized array of add-ins.
String addIns[] = {"Cream", "Cinnamon", "Chocolate", "Amaretto", "Whiskey"};
// Initialized array of add-in prices.
double addInPrices[] = {.89, .25, .59, 1.50, 1.75};
boolean foundIt;
int x; // Loop control variable.
double orderTotal = 2.00; // All orders start with a 2.00 charge

// Get user input.
Scanner input = new Scanner(System.in);
System.out.print("Enter coffee add-in or XXX to quit: ");
addIn = input.nextLine();
do{
   // making foundIt false for every item
   foundIt=false;
   //iterating the items array
   for(x=0;x<addIns.length;x++){
       //checking if item found in list
       if(addIns[x].equals(addIn)){
           //if found getting the price from the prices array
           orderTotal+=addInPrices[x];
           //adding to the total
           foundIt=true;
           //breaking the loop
           break;
       }
   }
   //checking if the item found in the array
   if(!foundIt){
       System.out.println("Sorry, we do not carry that");
   }
   System.out.print("Enter coffee add-in or XXX to quit: ");
addIn = input.nextLine();
}while(!addIn.equalsIgnoreCase("XXX"));
System.out.println("Order total: "+orderTotal);
// Write the rest of the program here.
  
} // End of main() method.
} // End of JumpinJive class.