trying to write a program where the user is able to insert food price and whether or not it is on sale I'm supposed to use a while loop to see if they have more items or not then display the total tax and final bill. Im trying to find a way to print out all the values inputted by the user in the loop but can't find a way how I got it to ask until the user has no items just need to get all the items printed out in the output
public static void main (String[] args)
{
double price;
String decision;
String item;
do
{
Scanner scan = new Scanner(System.in);
//Name of the item
System.out.println("What is the name of your item?");
item = scan.nextLine();
//Price of the item
System.out.println("What is the price of your item?");
price = scan.nextDouble();
//Whether item is on sale
System.out.println("Is this item on sale?");
String sale = scan.next();
System.out.println("Do you have more items? (Yes/No)");
decision = scan.next();
}while (decision.equalsIgnoreCase("yes"));
System.out.println("Grocery bill");
System.out.println();
System.out.println("purchases");
System.out.print(item + ": " + "$" + price);
}
so far this is what i have
2 Answers
How about you use a List and some class for state e.g.
class State{
public double price;
public String decision;
public String item;
}
Then make a new instance from your input and store the result in a list.
At the end loop through the list of items and print their results.
As the previous answer stated, creating a separate class to store the item details is a great approach. Since you do not know in advance how many items would be there, you can loop using do-while to collect item details and then keep adding the new item to the List till you are done and then finally pass that list to a method where you print the details and total. Here is a basic implementation that takes details of n items and then prints it.
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
String itemName;
Double itemPrice;
String itemOnSale;
String moreItems;
List<Item> items = new ArrayList<>();
try (Scanner scan = new Scanner(System.in)) {
do {
// Name of the item
System.out.println("What is the name of your item?");
itemName = scan.next();
// Price of the item
System.out.println("What is the price of your item?");
itemPrice = scan.nextDouble();
// Whether item is on sale
System.out.println("Is this item on sale?(Yes/No)");
itemOnSale = scan.next();
System.out.println("Do you have more items? (Yes/No)");
moreItems = scan.next();
items.add(new Item(itemName, itemPrice, itemOnSale));
} while (moreItems.equalsIgnoreCase("yes"));
} finally {
printBill(items);
}
}
private static void printBill(List<Item> items) {
double total = 0.00;
System.out.println("************** Grocery Bill ******************");
System.out.println("*** ITEM NAME **** ITEM PRICE **** ON SALE ? ****");
for (Item item : items) {
System.out.printf(" %s %.2f %s \n", item.itemName, item.price,
item.itemOnSale);
total += item.price;
}
System.out.println("************************************************");
System.out.println("Total :" + total);
}
}
class Item {
String itemName;
double price;
String itemOnSale;
public Item(String itemName, double price, String itemOnSale) {
this.itemName = itemName;
this.price = price;
this.itemOnSale = itemOnSale;
}
}
