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Start your free trialJohannes Pedersen
1,006 PointsHmmm, I called order.applyDiscountCode("abc") and I expected order.getDiscountCode to equal "ABC", but it was "abc"
Is the error the program gives me when i want to check my work. However, I dont see an issue with the code I wrote?
Help me figure it out please, ive been stuck here for quite a while now :P
public class Order {
private String itemName;
private int priceInCents;
private String discountCode;
public Order(String itemName, int priceInCents) {
this.itemName = itemName;
this.priceInCents = priceInCents;
}
public String getItemName() {
return itemName;
}
public int getPriceInCents() {
return priceInCents;
}
public String getDiscountCode() {
return discountCode;
}
public void applyDiscountCode(String discountCode) {
normalizeDiscountCode(discountCode);
this.discountCode = discountCode;
}
private String normalizeDiscountCode(String discountCode){
return discountCode.toUpperCase();
}
}
public class Example {
public static void main(String[] args) {
// This is here just for example use cases.
Order order = new Order(
"Yoda PEZ Dispenser",
600);
// These are valid. They are letters and the $ character only
order.applyDiscountCode("abc");
order.getDiscountCode(); // ABC
order.applyDiscountCode("$ale");
order.getDiscountCode(); // $ALE
try {
// This will throw an exception because it contains numbers
order.applyDiscountCode("ABC123");
} catch (IllegalArgumentException iae) {
System.out.println(iae.getMessage()); // Prints "Invalid discount code"
}
try {
// This will throw as well, because it contains a symbol.
order.applyDiscountCode("w@w");
}catch (IllegalArgumentException iae) {
System.out.println(iae.getMessage()); // Prints "Invalid discount code"
}
}
}
1 Answer
andren
28,558 PointsThe normalizeDiscountCode
method returns a new string, it does not modify the string you call it on. So you have to assign the value it returns to this.discountCode
for it to actually have a useful effect.
Like this:
public void applyDiscountCode(String discountCode) {
this.discountCode = normalizeDiscountCode(discountCode);
}