I've been trying to code a program that takes in user input to input it into an arraylist. I'm not sure what is going on here or why there are errors.
#Total price program
tropic locust
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tropic locust
The size of itemNames is 0.
the value "i" is set to 0
this is the error code
Which is caused by?
according to it on line 13 which is "itemNames.add(inpt.next());" the scanner method is undefined
but I've defined my scanner object
Which is totally correct code.
So what's the problem here?
I don't know, the code on the screenshot wouldn't throw any compilation error, although it's noop.
unborn geyser
You probably should add something to itemPrices?
tropic locust
Yes that’s for afterwards but as of right now I’m only trying to find a solution to my itemNames issue
sullen pagoda
When I entered all your code there are no issues. I don't have such an exception.
But I edited your code so it would work and let you enter items and prices.
tropic locust
Well I’m trying to have it so the user will input an answer and the answer will be placed into an array list which I will print later
I’m not sure if inpt.next is the right statement for such a thing
Then you have to think throught your stop condition.
I have it so if the user says stop the loop will break
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zealous ether
@tropic locust itemsNames is Empty , you could try this
try {
Scanner input = new Scanner(System.in);
System.out.println("Please enter name of items you would like to purchase: ");
String item = input.nextLine();
System.out.println("Please enter the cost of item " + item + ":");
double itemPrice = input.nextDouble();
List<String> itemsNames = new ArrayList<>();
if (!item.isEmpty()) {
itemsNames.add(item);
}
List<Double> prices = new ArrayList<>();
// Read the item price
prices.add(itemPrice);
// Display the added items and prices
for (int i = 0; i < itemsNames.size(); i++) {
System.out.println("Item: " + itemsNames.get(i) + "\t Price: " + prices.get(i));
System.out.println("Yay, added successfully!");
}
input.close();
}catch (Exception e){
System.out.println(e.getMessage());
}
Alright I’ll try it in a bit
zealous ether
Alright I’ll try it in a bit
this would be more accurate if you want to enter numbers with decimal point like 0.25 or something like that
try {
Scanner input = new Scanner(System.in);
input.useLocale(Locale.US);
System.out.println("Please enter name of items you would like to purchase: ");
String item = input.nextLine();
System.out.println("Please enter the cost of item " + item + ":");
double itemPrice = input.nextDouble();
List<String> itemsNames = new ArrayList<>();
if (!item.isEmpty()) {
itemsNames.add(item);
}
List<Double> prices = new ArrayList<>();
// Read the item price
prices.add(itemPrice);
// Display the added items and prices
for (int i = 0; i < itemsNames.size(); i++) {
System.out.println("Item: " + itemsNames.get(i) + "\t Price: " + prices.get(i));
System.out.println("Yay, added successfully!");
}
input.close();
} catch (Exception e) {
System.out.println(e.getMessage());
}