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Start your free trialJonas Støvring
5,229 Pointswhat am i doing wrong here :O
Can anyone tell me what i am doing wrong here
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) {
this.discountCode = normalizeDiscountCode(discountCode);
}
private String normalizeDiscountCode(String discountCode){
for(char c : discountCode.toCharArray()) {
if(!Character.isLetter(c) && c != '$') {
throw new IllegalArgumentException("invalid discount code.");
}
}
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
Jason Thomas
12,519 PointsI'm not sure why this doesn't work, but posting your error message would probably help somebody figure it out.
When I solved this I didn't use the enhanced for loop, but used a regular one so i could explicitly loop over discountCode (int i = 0; i < discountCode.length; i++) and used charAt(i) to grab each character.