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Java Java Objects (Retired) Delivering the MVP Defaulting Parameters

Stuck here for hours.

I tried to search for solutions on how to do this quiz but every time I get rid of one error another one comes up, they just don't stop coming, and it's always the same previous errors that come up after I get rid of another error. After I get rid of another error, a previous error comes back. A previous error comes back after I get rid of the current error. It never ends.

Example.java
public class Example {

  public static void main(String[] args) {
    ShoppingCart cart = new ShoppingCart();
    Product pez = new Product("Cherry PEZ refill (12 pieces)");
    cart.addItem(pez, 5);
    /* Since a quantity of 1 is such a common argument when adding a product to the cart,
     * your fellow developers have asked you to make the following code work, as well as keeping
     * the ability to add a product and a quantity.
     */
    Product dispenser = new Product("Yoda PEZ dispenser");
    /* Uncomment the line following this comment,
       after adding a new method using method signatures,
       to solve their request in ShoppingCart.java
    */
    // cart.addItem(dispenser);
  }

}
ShoppingCart.java
public class ShoppingCart {

  public void addItem(Product item, int quantity) {
    System.out.printf("1 of %s %n", quantity, item.getName());
    /* Other code omitted for clarity. Please imagine
       lots and lots of code here. Don't repeat it. 
    */
  }
  public void addItem(Product item) {
    // Call the original, just pass in the default
    addItem(item, 1);
}

}
Product.java
public class Product {
  /* Other code omitted for clarity, but you could imagine
     it would store price, options like size and color
  */
  private String mName;

  public Product(String name) {
      mName = name;
  }

  public String getName() {
      return mName;
  }
}
Gavin Ralston
Gavin Ralston
28,770 Points

Hi, could you post the stack trace of your most recent error?

It might help to start there.

1 Answer

Gavin Ralston
Gavin Ralston
28,770 Points

Did you ever uncomment the call to addItem now that you updated the signature to accept a single product?

 public static void main(String[] args) {

    /* ...Omitted other bits... */

    Product dispenser = new Product("Yoda PEZ dispenser");
    /* Uncomment the line following this comment,
       after adding a new method using method signatures,
       to solve their request in ShoppingCart.java
    */
    // cart.addItem(dispenser);
  }

In order to pass the challenge you'll need to uncomment that addItem call.