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Java Java Objects Delivering the MVP Applying a Discount Code

melissa zhang
melissa zhang
760 Points

Don't know the answer. Is anywhere I can check the correct answer?

Hi, do you know if I can check the correct answer somewhere? I don't know what is wrong with my coding.

Order.java
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(){
    return discountCode.toUpperCase();
  }

  public void applyDiscountCode(String discountCode) {
    this.discountCode =discountCode.normalizeDiscountCode;
  }
}
Example.java
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

james south
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
james south
Front End Web Development Techdegree Graduate 33,258 Points

your normalize method is supposed to take a string as the argument and return a string, so you need to add a string parameter so the discount code can be passed in when the method is called. then in your apply method, the normalize method is called with the discount code as the argument. the normalize method is not called on the discount code as the object like you have. myFunc(argument).

melissa zhang
melissa zhang
760 Points

Thank you so much for the quick reply. I just corrected it but it still says wrong. I have posted another question and copied my code. Could you please have a look ? Thank you so much.

melissa zhang
melissa zhang
760 Points

I understand now. Thank you so much.