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Arthur Kharzamanov
5,414 PointsI'm stuck on a challenge, please help!
I don't understand why system.out is not showing the 1 Yoda PEZ Dispenser. I added the following code to shoppingcart.java and have uncommented cart.addItem(dispenser) :
public void addItem(Product item) { System.out.printf("1 %s.\n", item.getName()); }
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");
cart.addItem(dispenser);
}
}
public class ShoppingCart {
public void addItem(Product item) {
System.out.printf("1 %s.\n", item.getName());
}
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
Corey Johnson
Courses Plus Student 10,192 PointsLooks like you are very close. All i did to complete the challenge was to uncomment the line "cart.addItem(dispenser);" in Example.java.
Then in ShoppingCart.java.. i copied the existing addItem method... and changed it to the below:
public void addItem(Product item) {
System.out.printf("Adding %d of %s to the cart.\n", 1, item.getName());
}
Hope this helps Arthur!
Corey Johnson
Courses Plus Student 10,192 PointsHello Colby,
You would have to check for 0 instead. The primitive int type variable will default to 0 instead of null if it is not initialized. So instead, your code should look like this:
public void addItem(Product item, int quantity) {
if(quantity != 0){ // or maybe > 0 would be even better
System.out.printf("Adding %d of %s to the cart.\n", quantity, item.getName());
} else {
quantity = 1;
System.out.printf("Adding %d of %s to the cart.\n", 1, item.getName());
}
}
But the challenge wants you to use a different addItem method that only takes a Product object as a parameter.
Hope this helps.
Colby Wise
3,165 PointsThat does. Last question...a bit more of a noob question. How do you insert your code snippet like that? Mine is all orange etc where as yours methods, args, etc are clear/ color coded
Corey Johnson
Courses Plus Student 10,192 PointsNo worries. For Java.. you use 3 back ticks and then the word java. The back tick is below the tilde on your keyboard. So you do 3 back ticks then "java" and then your java code.. and then close with 3 back ticks. You can find more info by clicking the Markdown Cheatsheet at the bottom of this page.
Let me know if i can help with anything else Colby.
Colby Wise
3,165 PointsColby Wise
3,165 PointsHey Corey - thanks. Any idea why using a [null] check in the original addItem method doesn't work or isn't a better solution. Code below: