Welcome to the Treehouse Community
Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.
Start your free trialA Coder
2,362 PointsCode is not acceptable despite the program doing exactly what the exercise asks
My code does not pass the check, despite the code working as the exercise intends in the preview. "h1!" is passed in and is recognized, and the IllegalArgumentException runs during the normalize function, but the "Recheck Work" always fails with the same error, saying that h1! did not throw an IllegalArgumentException.
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 discountCode)
{
for( char letter : discountCode.toCharArray())
{
if(!Character.isLetter(letter) && letter != '$')
{
throw new IllegalArgumentException("Invalid discount code.");
}
}
return discountCode;
}
public void applyDiscountCode(String discountCode)
{
try
{
System.out.printf("%s %n", discountCode);
discountCode = discountCode.toUpperCase();
discountCode = normalizeDiscountCode(discountCode);
System.out.printf("%s %n", discountCode);
this.discountCode = discountCode;
}
catch(IllegalArgumentException iae)
{
System.out.printf("%s %n", 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
Steven Parker
231,172 PointsPart of the task 1 instructions for "normalizeDiscountCode" say "It should take the discount code that is passed into the method and return the uppercase version.", but this code doesn't seem to convert the value to upper case.
Then, only two minor changes are asked to be made to "applyDiscountCode", but here a number of extra changes have been made that alter what the method does.
It's important to follow challenge instructions exactly, and to also not change anything they don't ask for.
A Coder
2,362 PointsA Coder
2,362 PointsI've retried the challenge with the advice given and it's worked! I'll remember to read the question more carefully from now on. Thank you!