Question

[JAVA]

If you have a class called ShoppingCart, List at least three API (method) that helps manage the ShoppingCart.

Answer 1

import java.util.ArrayList;

class ShoppingCart {

    private ArrayList<String> items;

    public ShoppingCart() {
        items = new ArrayList<>();
    }

    public void addItem(String item) {
        items.add(item);
    }

    public void removeItem(String item) {
        items.remove(item);
    }

    public void clearCart() {
        items.clear();
    }

    public int cartSize() {
        return items.size();
    }

    public void printAllItems() {
        System.out.print("Items in shopping cart are: ");
        for (int i = 0; i < items.size(); i++) {
            System.out.print(items.get(i) + " ");
        }
        System.out.println();
    }
}

class ShoppingCartTest {

    public static void main(String[] args) {
        ShoppingCart cart = new ShoppingCart();
        cart.addItem("headphones");
        cart.addItem("laptop");
        cart.addItem("table");
        System.out.println("Number of items in cart: " + cart.cartSize());
        cart.printAllItems();
    }
}