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Java Java Objects Delivering the MVP Applying a Discount Code

still stuck on this Java challenge

HELP!!! not really sure what im doing wrong here, im on part 2 of this Java challenge. here is the code that i have.

private String normalizeDiscountCode(String discountCode){ for (char discode : discountCode.toCharArray()){ char ch = '$'; boolean dollarSign = discountCode.indexOf(ch) != -1; if(! Character.isLetter(discode) || dollarSign){ throw new IllegalArgumentException("Invalid discount code"); } } return discountCode.toUpperCase();
}

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;
  }

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

  private String normalizeDiscountCode(String discountCode){
    for (char discode : discountCode.toCharArray()){
      char ch = '$';
      boolean dollarSign = discountCode.indexOf(ch) != -1;
      if(! Character.isLetter(discode) || dollarSign){
        throw new IllegalArgumentException("Invalid discount code");
      }
    }
    return discountCode.toUpperCase();  
  }
}
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"
    }

  }
}

4 Answers

//yeah the condition in the if is still messed up. try a nested if like this

private String normalizeDiscountCode(String discountCode){

for (int i = 0; i < discountCode.length(); i++){
  Character ch = discountCode.charAt(i);

    if (!Character.isLetter(ch)){
      if(ch != '$') {
        throw new IllegalArgumentException("Invalid discount code");
      }
  }
}
return discountCode.toUpperCase();

} }

// I think this will work, or something very close to it will.

private String normalizeDiscountCode(String discountCode){

for (int i = 0; i < discountCode.length(); i++){
  Character ch = discountCode.charAt(i);

    if (!Character.isLetter(ch) || ch != '$'){         
      throw new IllegalArgumentException("Invalid discount code");
  }
}
return discountCode.toUpperCase();

}

that does not seem to be working. but thanks for you help

Hey it WORKS!!!! thanks for your help with this.

No problem, glad I could help.