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Start your free trialYousif Sayer
7,073 PointsWhy the code doesn't work.
It is asking if the string contain legal char , i tried to convert a string to array of char then loop through it then check if the it is valid char. I'm not sure if I did right.
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) {
char[] letters = discountCode.toCharArray();
String upper = "";
for(char l: letters){
if(Character.isLetter(l)){
upper += l;
}else{
throw new IllegalArgumentException("Invalid discount code");
}
}
return upper.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(); // $ALE
try {
// This will throw an exception because it contains numbers
order.applyDiscountCode("ABC123");
} catch (IllegalArgumentException iae) {
System.out.println(iae.getMessage()); // Prints "Invalid discount code"
}
try {
// This will throw as well, because it contains a symbol.
order.applyDiscountCode("w@w");
}catch (IllegalArgumentException iae) {
System.out.println(iae.getMessage()); // Prints "Invalid discount code"
}
}
}
1 Answer
Brendan Whiting
Front End Web Development Techdegree Graduate 84,738 Points'$' isn't a letter, but this challenge wants it to be a valid character, so you need to check it as well in your condition, something like this:
if (Character.isLetter(l) || l == '$') {
upper += l;
}
Yousif Sayer
7,073 PointsYousif Sayer
7,073 PointsThanks for your help , I missed this part of if condition.