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Start your free trialSebastian Nawrocki
Courses Plus Student 2,057 PointsWhat do I do wrong with this code? Doesn't toCharArray() break discountCode permanently into pieces?
I'm trying to resolve this challenge, part 2 , but I cant do it at all - I keep getting some error. I did use "for (char letter: discountCode.toCharArray())" but does it not break it into array and stays this way? How do we re-assemble this? I am really getting completely lost at this :(.
public class Order {
private String itemName;
private int priceInCents;
private String discountCode;
private String specialDollarSign = "$$";
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;
}
private String normalizeDiscountCode (String discountCode) {
for (char letter : discountCode.toCharArray()) {
if (!Character.isLetter(letter) || letter != '$') {
throw new IllegalArgumentException ("Invalid discount code.");
}
}
return discountCode.toUpperCase();
}
public void applyDiscountCode(String discountCode) {
try {
this.discountCode = normalizeDiscountCode(discountCode);
} catch (IllegalArgumentException iae) {
System.out.println(iae.getMessage());
}
}
}
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
Sebastian Nawrocki
Courses Plus Student 2,057 PointsLooks like I just had to swap over || to && in order not to get mistakes.
I re-did exercise and it was stuck on first phase that's why the error occurred. I removed the try,catch also from applyDiscountCode.