Imagine this: your online store launches a massive promotion. Thousands of users flood your site at once—browsing, adding items to carts, placing orders, and checking delivery statuses. In a sequential processing model, each action is handled one by one. Within seconds, response times lag, pages freeze, orders fail, and customer satisfaction plummets.
Now imagine: your system is designed with multithreading and concurrency in Java. Tasks—shopping, ordering, status checking—are distributed across multiple threads, executed in parallel, synchronized for safety, and scaled efficiently. The result? Fast responses, zero failures, and delighted customers who keep coming back.