Why is nothing being added to the ArrayList?

Question

So here's what I am doing. I create a book, I add the book to an inventory class that extends an inventory of overall products (contains the arraylist for the program) with this:

    myBookInventory.addProduct(myBook);

Which comes from:

    super.addProduct(pBook); // From BookInventory class that extends ProductInventory class

Which contains the following code:

     public void addProduct(Product pProduct)
{

    // Add the new product to the product inventory array list
    myProductInventory.add(pProduct);


}

ProductInventory has an arraylist called myProductInventory. What I want to do is display the information of that product. Here's what I use:

    for (Product product: productList.myProductInventory) {
                System.out.println(product);
            }

Problem occurs here in this System.out. It does not display anything, and I have no idea why. I'm open to any solution. If there's anything missing that you'd like for me to show you, just let me know.

Answer 1

It looks like new books are added to InventoryProgram's myBookInventory, but you are displaying books from Menu's productList, which is still empty.

Answer 2

From user3108443L:

" I did the following:

for (int i = 0; i < myBookInventory.getSize(); i++) {
            System.out.println(myBookInventory.getProduct(i));
        }

This printed out exactly what I wanted. "