To provide a framework for asynchronous programming.
CompletableFuture allows you to write non-blocking asynchronous code. It enables chaining of tasks that execute asynchronously and can be used to handle complex workflows. In a flash sale system, CompletableFuture might asynchronously handle user notifications once an order is processed, ensuring the main thread remains free for handling additional orders.
Additional Notes
Why does CompletableFuture in Java matter in practice?