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Start your free trialJennifer Barbee
Front End Web Development Techdegree Student 2,387 PointsHow do I verify that only letters or the '$' sign is being used, and to throw an exception if other characters are used
Hello,
I'm having trouble getting this code to run properly. Can anyone help explain what I'm doing wrong, and break it down for me a little bit? I appreciate your guy's help!
public class Order {
private String itemName;
private int priceInCents;
private String discountCode;
public Order(String itemName, int priceInCents) {
this.itemName = itemName;
this.priceInCents = priceInCents;
}
public void applyDiscountCode(String discountCode) {
this.discountCode = normalizeDiscountCode(discountCode);
}
private String normalizeDiscountCode(applyDiscountCode() {
for (char letter : discountCode.toCharArray()) {
if(! Character.isLetter(letter) && letter !='$') {
throw new IllegalArgumentException("Invalid discount code");
}
return discountCode;
}
}
}
1 Answer
Steve Hunter
57,712 PointsHi Jennifer,
There's a couple of points in here but most of your code is absolutely correct.
First, pass in a String
into the normalize
method; don't call the other method. Just pass in a String
call it discountCode
. You then use that inside your method, as you have done.
Second, your return
misses the .toUpperCase()
method out - add that back on.
Also, you are making the return
call inside the for
loop. Make sure it is outside of if. I think you just need to move it down one line, beyond one of the curly braces.
I think that's it - let me know how you get on.
Steve.
Jennifer Barbee
Front End Web Development Techdegree Student 2,387 PointsHey Steve, that worked. I see what I did wrong now. Thanks for your help.
Steve Hunter
57,712 PointsGlad you got it sorted!
Jennifer Barbee
Front End Web Development Techdegree Student 2,387 PointsJennifer Barbee
Front End Web Development Techdegree Student 2,387 PointsHere is the code challenge:
Challenge Task 2 of 2
Now let's use your validation skills. Only letters and the $ symbols are allowed in the discount code. Check Example.java for use cases
In the normalizeDiscountCode verify that only letters or the $ character are used. If any other character is used, throw a IllegalArgumentException with the message Invalid discount code.