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Java Java Objects (Retired) Delivering the MVP Defaulting Parameters

Suciu Sorin
Suciu Sorin
2,388 Points

Task challenge

I have no clue and i watched the tutorials over and over again. I need to make it easier to add things to the cart.

Help please!

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. 
    */
  }
}
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

Thomas Jacob
Thomas Jacob
14,347 Points

Hi Suciu,

In this code challenge, you are supposed to define an addItem() function that matches the signature of the function call that has been commented out.

// cart.addItem(dispenser);

Define this in the ShoppingCart class, the class already has an addItem() method but the new method will not create a conflict with the old one because it will have a different method signature. The default number of items for the new addItem() method should be 1.

I hope this makes the question understandable.

Thomas