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Lachlan Kruger
Courses Plus Student 1,868 PointsI Don't Understand
I Need Help With This Challenge
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);
}
}
public class ShoppingCart {
public void addItem(Product item, int quantity) {
Product product = new Product();
System.out.printf("Adding %d of %s to the cart.%n", quantity, item.getName());
/* Other code omitted for clarity */
}
}
public class Product {
/* Other code omitted for clarity, but you could imagine
it would store price, options like size and color
*/
public String mPrice;
public String mSize;
public String mColor;
private String mName;
public Product(String name) {
mName = name;
}
public String getName() {
return mName;
}
}
3 Answers
Sean Tristan Yu
11,191 Pointspublic 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("Adding 1 of %s to the cart.%n", item.getName());
}
}
I added a method that has the same name. Java has something what we call method signatures. We can have the same name for two or methods, but Java can still differentiate each method through the methods' parameter and etc., and essentially pick the right one for the right situation. In this case, we added another addItem method that only needs one parameter if the user only wants to add 1 item to their cart.
MUZ140265 Blessing Kabasa
4,996 Pointspublic 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);
}
}
MUZ140265 Blessing Kabasa
4,996 Pointsuncomment the line to remain with cart.addItem(dispenser);
Jess Sanders
12,086 PointsExample.java has a line of code that is commented out
cart.addItem(dispenser);
If all you do is uncomment this line and check your work, you get a compiler error. We need to write a second addItem method that only takes one argument, rather than two.
So, in ShoppingCart.java, we can copy and paste the existing addItem method, but remove the second argument. We also need to change what is printed, because we know that we are Adding 1 of the item to the cart.
Lachlan Kruger
Courses Plus Student 1,868 PointsLachlan Kruger
Courses Plus Student 1,868 PointsThanks bro