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Start your free trialEdward Eastwood
Courses Plus Student 3,839 PointsShopping Cart: System.out does not show 1 Yoda Pez dispenser
I am doing the shopping cart Challenge Task and it is asking me to create a new method (using method signatures) that will take just the product as an argument and automatically set the quantity to one. I have no idea what could be wrong. It is saying that the test may be uncommented but it is. HELP!
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);
}
}
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("1 %s.\n", item.getName());
}
}
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
Matthew Carr
11,220 PointsYour new function should return the original function, but when you call the original function you use the value of 1 where you would put a quantity.
Edward Eastwood
Courses Plus Student 3,839 PointsEdward Eastwood
Courses Plus Student 3,839 PointsAhhh I understand now! Thank you very much. Is this the common way to employ method signatures? (i.e. the 'new' method returning the 'old')
Matthew Carr
11,220 PointsMatthew Carr
11,220 PointsIt is a common way. Whether you use it or not is very much dependent on the context of why and how you are writing the method with a different signature. In this case it makes sense not to repeat the code from the original function when you can just call it with one parameter already filled in.