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Java Java Objects (Retired) Delivering the MVP Defaulting Parameters

Akshay Satoskar
Akshay Satoskar
1,802 Points

what to do in this exercise

i have added public void addItem(Product item) { System.out.printf("1 %s ",item.getName());} please help

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 this line after 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 */
  }
  public void addItem(Product item) {
    System.out.printf("1 %s ",item.getName());
    /* Other code omitted for clarity */
  }
}
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;
  }
}

2 Answers

Devin Scheu
Devin Scheu
66,191 Points

Keep the line in Example.java uncommented like you already have. Then the code in ShoppingCart.java should look like this:

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 */
     }
   public void addItem(Product addedItem) {
   addItem(addedItem, 1);
   }
}
Akshay Satoskar
Akshay Satoskar
1,802 Points

thanks for the reply.but can you explain me how it is accepting 1 in addItem(addedItem, 1)?

Devin Scheu
Devin Scheu
66,191 Points

The one is specifying the quantity of items added in this case one, because only one item need to be added. Don't forget to mark my answer as Best Answer below so people who are having the same issues can also get help.

Happy Coding - Devin