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Start your free trialIulian Cristea
901 PointsLet's use your normalization skills to normalize a discount code for a Shopping Cart application. All codes should be up
I recive the following error message " Bummer! Hmmm, I called order.applyDiscountCode("abc") and I expected order.getDiscountCode to equal "ABC", but it was "abc"" and in Output is 'ABC'. Can you tell e what is the probleme?
public class Order {
private String itemName;
private int priceInCents;
private String discountCode;
public Order(String itemName, int priceInCents) {
this.itemName = itemName;
this.priceInCents = priceInCents;
}
private String normalizeDiscountCode(String txt) {
return txt.toUpperCase();
}
public String getItemName() {
return itemName;
}
public int getPriceInCents() {
return priceInCents;
}
public String getDiscountCode() {
return discountCode;
}
public void applyDiscountCode(String discountCode) {
this.discountCode = discountCode;
System.out.print(normalizeDiscountCode(discountCode));
}
}
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"
}
}
}
David Moody
19,302 PointsDavid Moody
19,302 PointsHere is your code:
public void applyDiscountCode(String discountCode) { this.discountCode = discountCode; System.out.print(normalizeDiscountCode(discountCode)); }
Changes you should make:
First, don't print. When you do print, you typically printf or println. But in this case, don't print.
Second, set this.discountCode equal to the call of normalizeDiscountCode and pass in discountCode. Like this:
public void applyDiscountCode(String discountCode) { this.discountCode = normalizeDiscountCode(discountCode); }