Challenge: Implement Delete Cart Items API

You will attempt to implement “delete cart items” APIs in this challenge.

We'll cover the following...

First, let’s declare an exception, CartItemNotExistException.

Java

package com.educative.ecommerce.exceptions;
public class CartItemNotExistException extends Exception {
    public CartItemNotExistException(String msg) {
        super(msg);
    }
}

Next, ...