Question

Required Names:

• Main class: StoreProgram
• Java filename: StoreProgram.java

StoreProgram

This project will be a program that provides information about inventory in a grocery store. Use this codeas your starting point. This code already has a main method written for you. DO NOT modify the main method. If you modify the main method, you will lose points.

In the main method, you will notice three arrays:

• A String array representing the items in the store by name.
• An integer array representing the quantities of each item.
• A double array representing the price of each item.

Here is the code as seen in the file:

String[] storeItems = {
        "broccoli", "onion", "carrot", "turnip", "mango",
        "bread", "garlic", "celery", "apple", "banana",
        "raisins", "grapes", "lemon", "orange", "potato"
};

int[] itemQuantities = {
        23, 5, 7, 15, 2,
        13, 13, 8, 20, 30,
        3, 25, 10, 9, 1
};

double[] itemPrices = {
        2.0, 0.89, 0.70, 1.50, 2.99,
        3.45, 1.45, 1.12, 3.99, 0.25,
        4.99, 7.00, 1.75, 1.80, 3.25
};

Each array provides information about a specific item by index. This means that each index is specific for the item in the store. For example, notice that "carrot" is at index 2 in the storeItems array. This means that the quantity of carrots is also located at index 2in the itemQuantities array (which is 7), and the price of carrots is located at index 2 in the itemPrices array (which is 0.70).

For the purpose of this assignment, you can assume that the three arrays are always of equal length. This means that if you refer to the length property on any of them (for example, itemPrices.length), then the length will be the same for the other two arrays as well.

Instructions

Your program will need to have:

• runTransaction -> This method is kind of like the "main method" for everything related to the store manager program. The program starts and ends with this method, so the entire flow of the program should be managed here.
  The user should be given the following five options to choose from:
  
  When each option is completed and executed, the user should be able to choose from the option again, with the exception of Option 5 (Exit) which will cause the program to end.

To help runTransaction run properly without making it too bulky, you will be required to implement the following methods as well. Each of these methods should have three parameters (the three arrays), and they should not return any values.

• displayInventory (Option 1)-> This method will display the entire inventory. For each item, display the item on a single line like we did in the video.
• displayLowInventory (Option 2)-> This method will only display inventory if the quantity is less than 5.
• displayHighestLowest (Option 3)-> This method will display the items with the highest inventory value and the lowest inventory value. The inventory value is the quantity multiplied by the price, which is basically what you would pay if you were to buy the entire stock of the item.
  When displaying the items, you only need to show the item's name and the inventory value of the item. Do not display any information about any other item. Only display the information about the item with the highest inventory value and the item with the lowest inventory value.
• displayTotalInventory (Option 4)-> This method will calculate the inventory value for each item and display the sum total of all inventory values.

Pleases if I can get help today with how to do these steps of  coding ?

Answer 1

Ok, so the required code is attached below.

First, read the code and run it. and if you get any doubt feel free to drop that in the comment section.

And if you think anything is missing, do let me know.

Code:

import java.util.*;

public class StoreProgram{
   public static void main(String[] args) {
       String[] storeItems = {
       "broccoli", "onion", "carrot", "turnip", "mango",
       "bread", "garlic", "celery", "apple", "banana",
       "raisins", "grapes", "lemon", "orange", "potato"
       };

       int[] itemQuantities = {
       23, 5, 7, 15, 2,
       13, 13, 8, 20, 30,
       3, 25, 10, 9, 1
       };

       double[] itemPrices = {
       2.0, 0.89, 0.70, 1.50, 2.99,
       3.45, 1.45, 1.12, 3.99, 0.25,
       4.99, 7.00, 1.75, 1.80, 3.25
       };
       runTransaction(storeItems, itemQuantities, itemPrices);
   }

   private static void runTransaction(String[] storeItems, int[] itemQuantities, double[] itemPrices) {
       Scanner input=new Scanner(System.in);
       while(true) {
           System.out.println("\nChoose option:\n\n"
                   + "1. Display Inventory\n"
                   + "2. Display Low Inventory\n"
                   + "3. Display Highest Lowest\n"
                   + "4. Display Total Inventory\n"
                   + "5. Exit");
           int o=input.nextInt();
           if(o==1) {
               displayInventory(storeItems,itemQuantities, itemPrices);      
           }
           else if(o==2) {
               displayLowInventory(storeItems,itemQuantities, itemPrices);
           }
           else if(o==3) {
               displayHighestLowest(storeItems,itemQuantities, itemPrices);
           }
           else if(o==4) {
               displayTotalInventory(storeItems,itemQuantities, itemPrices);
           }
           else if(o==5) {
               break;
           }
           else {
               System.out.println("Invalid Input");
           }
       }
      
   }

   private static void displayTotalInventory(String[] storeItems, int[] itemQuantities, double[] itemPrices) {
       double sum=0;
       for(int i=0;i<storeItems.length;i++) {
           sum=sum+(itemPrices[i] * itemQuantities[i]);
       }
       System.out.println(String.format("%.2f",sum));
      
   }

   private static void displayHighestLowest(String[] storeItems, int[] itemQuantities, double[] itemPrices) {
       String high=storeItems[0];
       String low=storeItems[0];
       double h_value=itemPrices[0] * itemQuantities[0];
       double l_value=itemPrices[0] * itemQuantities[0];
       for(int i=0;i<storeItems.length;i++) {
           double inventory = itemPrices[i] * itemQuantities[i];
           if(inventory >h_value) {
               h_value=inventory;
               high=storeItems[i];
           }
           if(inventory < l_value) {
               l_value=inventory;
               low=storeItems[i];
           }
       }
       System.out.println("Highest Inventory\n"+high+"\t"+h_value+"\n");
       System.out.println("Lowest Inventory\n"+low+"\t"+l_value+"\n");
      
      
   }

   private static void displayLowInventory(String[] storeItems, int[] itemQuantities, double[] itemPrices) {
       System.out.println();
       for(int i=9;i<storeItems.length;i++) {
           if(itemQuantities[i]<5) {
               System.out.println(storeItems[i]);
           }
       }
      
   }

   private static void displayInventory(String[] storeItems, int[] itemQuantities, double[] itemPrices) {
       System.out.println();
       for(int i=9;i<storeItems.length;i++) {
       System.out.println(storeItems[i]);
       }
      
   }