$1.$ Inventory Management with Synchronized Methods

$$ Write a program simulating an inventory management system for an e$-$commerce

platform.

$$ Create a class Inventory that holds the stock quantity of a product.

$$ Multiple threads represent customers attempting to purchase items from the inventory.

$$ Use synchronized methods to ensure that the stock quantity cannot go below zero.

$$ Implement a purchaseItem$($int quantity$)$ method in the Inventory class that decreases the stock by the requested quantity. If there$$s not enough stock, display a

message that the order cannot be fulfilled. Use synchronized methods to manage

access to the stock quantity.

$$ Add a restock method that simulates a restocking process by another thread. This

thread should be able to add items back into the stock periodically while other

threads attempt to purchase items.