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Alfredo Prince
6,175 PointsI have no idea what i'm doing here.
Can anyone offer a little guidance?
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;
}
}
3 Answers
Benjamin Sonin
12,938 PointsAlmost! You've got to add the new method in the shopping cart class. Try something like this:
// This is already in the Shopping Car Class 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. */ }
// Add something like this public void addItem(Product item,) { addItem(item, 1) }
Then adjust the Example file as needed, if you need to. This way, if a user calls addItem with only an item, it is assumed that only one product is added.
Benjamin Sonin
12,938 PointsThe question is asking you to allow users to add only a product, and if no quantity is specified then the program should assume only one of the products was added. Is there a way you can create another addItem() method that would take in only a product, and automatically set the value for quantity to 1? Maybe your new addItem() method can call the currently written addItem() method using a different signature.
Alfredo Prince
6,175 Pointsi tried the following and got a wealth of errors. I also tried to pass "item" as a parameter to no avail.
public class ShoppingCart {
public final int MINIMUM = 1;
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(){
addItem(MINIMUM);
}
}
}
Any ideas?
Benjamin Sonin
12,938 PointsClose man. So you need to remember that you don't know the product you're taking in. Your new addItem method should take a product, and then call the previous addItem method.
Try something like this:
public void addItem(Product item) {
addItem(item, MINIMUM);
}
Alfredo Prince
6,175 PointsAlfredo Prince
6,175 PointsI eventually got to the same conclusion haha thank you!