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Start your free trialCesar Manrique
3,708 Pointshow do i validate
i dont understand what im doing wrong
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 letter : discountCode.toCharArray()){
if(!Character.isLetter(letter) || letter != '$'){
throw new IllegalArgumentException("Invalid Discount Code");
}
}
this.discountCode = discountCode.toUpperCase();
return this.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);
String isGood;
boolean isAcceptable= false;
do{
// 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
isGood = order.applyDiscountCode("ABC123");
isAcceptable= true;
} catch (IllegalArgumentException iae) {
System.out.println(iae.getMessage()); // Prints "Invalid discount code"
}
try {
// This will throw as well, because it contains a symbol.
isGood = order.applyDiscountCode("w@w");
isAcceptable= true;
}catch (IllegalArgumentException iae) {
System.out.println(iae.getMessage()); // Prints "Invalid discount code"
}
while (!isAcceptable) ;
return isGood;
}
}
1 Answer
Trent Christofferson
18,846 PointsIn your normalizeDiscountCode all you need to do is call a very useful method for strings
private String normalizeDiscountCode(String discountCode) {
return discountCode.toUpperCase();
}