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Java Java Objects (Retired) Delivering the MVP Defaulting Parameters

Marlon Clark
Marlon Clark
7,775 Points

Java Object challenge 1

What am I doing wrong? The code compiles with no errors and the output looks to be what the challenge is asking for. Please help me see what I am overlooking.

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("Adding %d of %s to the cart.%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) {
    System.out.printf("Adding %s to the cart.", item.getName());
  }
}
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;
  }
}

1 Answer

It basically wants you to write another addItem() method with just one parameter and inside the method body add a call statement for the original addItem() method and just put a 1 in the quantity argument. Like this:

public void addItem(Product item){
    this.addItem(item, 1);
  }
Marlon Clark
Marlon Clark
7,775 Points

OK. I do recall using a second method in that fashion before. I guess I forgot to keep the code DRY. Thanks for the assistance!