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POHow to use arrays in this java code so I can output values in order they are assigned to positions ?
 

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  1. POHow to use arrays in this java code so I can output values in order they are assigned to positions ?
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    <p>I am a java beginner and I am coding a program that gets the name of the item, units of that item, price/unit and the total price. I am trying to put those values in different arrays so I can access them later when I create a sort of a receipt but I don't know how to assign those values in array positions and then access those same positions without having to hard-code. A loop is the best option but I dont know how to set this thing up. Help and suggestions would really be appreciated. Keep in mind that I cant do advanced stuff like matrices and 3D arrays. If you can keep it simple it would be awesome.</p> <p>This is the main class, I have a tester class with main() that runs userInput() and menu() but theres no point in putting that in because its only 2 lines of code.</p> <pre><code>import java.util.Scanner; public class GroceryList { // instance variables Scanner Price, Items, NumItems, Units; private double myGross, myNet; private final double STATETAX; private double totalPrice, unitPrice; private String itemName; private int totalUnits; ///////////////////////////////////////////// arrays I will use private double[] totalPrice1; private double[] unitPrice1; private String[] itemName1; private int[] totalUnits1; public GroceryList() { STATETAX = 0.06; double[] totalPrice = new double[50]; double[] unitPrice = new double[50]; String[] itemName = new String[50]; int[] totalUnits = new int[50]; } public void userInput() { Scanner Price = new Scanner(System.in); Scanner Items = new Scanner(System.in); Scanner Units = new Scanner(System.in); Scanner NumItems = new Scanner(System.in); int u, c, totalItems;// c is the number of items that has to equal totalItems in order for the loop to break double price; String item;//gets the name of the item c=0; System.out.println("Welcome to Grocery List ! \n"); System.out.print("Enter the total number of items you want to buy (not total units !) : "); totalItems = NumItems.nextInt(); System.out.println(); do { c++ ; System.out.print("Enter the item name : "); item = Items.nextLine(); System.out.print("Enter the units of " + item + " you want to buy : "); u = Units.nextInt(); System.out.print("Enter the price of a/n " + item + " : $"); price = Price. nextDouble(); /*this would make only one value appear at the receipt, which would be only one item name, one unit price, one price/unit, one total price and the other values calculated would not appear on the receipt because you cant assign more than 1 value to a variable so thats why I need arrays. */ itemName = item; totalUnits = u; unitPrice = price; calc(u,price,item); } while (c &lt; totalItems); } public void calc(int u, double p, String i) { double total;//total amount of $ for 1 item total = u*p; System.out.println("Total price of " + i + " : $" + total + "\n"); grossPay(total); totalPrice = total; } public void grossPay(double total) { double gross; myGross += total; } public double tax() { double temp; temp = myGross*STATETAX; myNet = myGross - temp; return myNet; } public void menu() { System.out.printf("%-10s %6s %11s %11s" , "ITEM :" , "UNITS :" , "PRICE :" , "TOTAL :"); System.out.println(); System.out.printf("%-11s %2d %7s $%4.2f %5s $%2.2f", itemName, totalUnits,"", unitPrice,"", totalPrice); System.out.println(); } public void payment() { System.out.println("Amount before tax : $" + myGross); System.out.println("Amount after tax : $" + tax()); } }//end GroceryList </code></pre>
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