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Start your free trialErnest Lin
2,691 PointsI don't get what I am supposed to do here
What am I supposed to do here? I don't get the instructions at all
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 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
Chris Adamson
132,143 PointsHere they are looking for a 'convenience' method:
Tweak the shopping cart, to add one method:
public void addItem(Product item) {
addItem(item, 1);
}
It simply invokes the existing method to add one method.
Then in Example.java, uncomment the one line to actually use it:
cart.addItem(dispenser);
Ernest Lin
2,691 PointsErnest Lin
2,691 PointsWhen I enter those in it still says ./ShoppingCart.java:4: error: method addItem in class ShoppingCart cannot be applied to given types; addItem(item, 1); ^ required: Product found: Product,int reason: actual and formal argument lists differ in length ./Example.java:6: error: method addItem in class ShoppingCart cannot be applied to given types; cart.addItem(pez, 5); ^ required: Product found: Product,int reason: actual and formal argument lists differ in length 2 errors