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Start your free trialmohamadreza azadi
5,167 Pointsstuck here :\ has anyone else
unfortunately i'm stuck here for 1 day ;| in this exercise task2 say: only letter and "$" you can use .
i done letter and i dont know what's that metod to define $ can use it
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) {
discountCode=normalizeDiscountCode(discountCode);
this.discountCode = discountCode;
}
private String normalizeDiscountCode(String discountCode){
String capital="";
for(char letter:discountCode.toCharArray()){
if(!Character.isLetter(letter)){
throw new IllegalArgumentException("Invalid discount code");
}
letter=Character.toUpperCase(letter);
capital=capital+letter;
}
return capital;
}
}
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(); // $ALE
try {
// This will throw an exception because it contains numbers
order.applyDiscountCode("ABC123");
} catch (IllegalArgumentException iae) {
System.out.println(iae.getMessage()); // Prints "Invalid discount code"
}
try {
// This will throw as well, because it contains a symbol.
order.applyDiscountCode("w@w");
}catch (IllegalArgumentException iae) {
System.out.println(iae.getMessage()); // Prints "Invalid discount code"
}
}
}
1 Answer
Isaiah Marin
11,971 PointsHi, I noticed you didn't check to see if the discount code is a '$' symbol. The challenge states that the discount code must be a letter or a '$'. And to throw an exception if the discount code is not a letter or '$'.
So maybe in your if statement include something like " (!Character.isLetter(letter) && letter != '$') ."
Anyhow, I here is code that worked for me. I hope it helps.
public class Order {
private String itemName;
private int priceInCents;
private String discountCode;
public Order(String itemName, int priceInCents) {
this.itemName = itemName;
this.priceInCents = priceInCents;
}
public String getItemName() {
return itemName;
}
public int getPriceInCents() {
return priceInCents;
}
public String getDiscountCode() {
return discountCode;
}
public void applyDiscountCode(String discountCode) {
this.discountCode = normalizeDiscountCode(discountCode);
}
private String normalizeDiscountCode (String discountCode) {
String normalizedCode = "";
for (char letter : discountCode.toCharArray()) {
if (Character.isLetter(letter) || letter == '$') {
normalizedCode += Character.toUpperCase(letter);
} else {
throw new IllegalArgumentException("Invalid discount code");
}
}
return normalizedCode;
}
}