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1,549 Pointsthe task is to throw an iae if the string contains characters which are not letters or the dollar sign
the task is to throw an iae if the string contains characters which are not letters or the dollar sign, it says it expected ABC but got null instead, help please
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;
}
private String normalizeDiscountCode(String dcode){
dcode=dcode.toUpperCase();
for (char letter : dcode.toCharArray()){
if(! (Character.isLetter(letter))||letter!='$'){
throw new IllegalArgumentException("Invalid discount code");
}
}
return dcode;
}
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(); // $ALE
try {
// This will throw an exception because it contains numbers
order.applyDiscountCode("ABC123");
} catch (IllegalArgumentException iae) {
System.out.println(iae.getMessage()); // Prints "Invalid discount code"
}
try {
// This will throw as well, because it contains a symbol.
order.applyDiscountCode("w@w");
}catch (IllegalArgumentException iae) {
System.out.println(iae.getMessage()); // Prints "Invalid discount code"
}
}
}
1 Answer
Brendan Whiting
Front End Web Development Techdegree Graduate 84,738 PointsYou want and &&
instead of or ||
.
For each character, if the character isn't a letter AND the character isn't '$', throw and exception.