What is the difference between Future and CompletableFuture in Java?

What is the difference between Future and CompletableFuture in Java?

Future is a simple interface for asynchronous computation, while CompletableFuture is a more powerful extension that allows for non-blocking operations.

Can you explain how CompletableFuture improves upon Future?

CompletableFuture provides methods for combining multiple futures, handling exceptions, and allows for more complex asynchronous programming patterns.

Are there any specific use cases where CompletableFuture is preferred over Future?

Yes, CompletableFuture is preferred in scenarios requiring complex chaining of tasks, error handling, or when you need to wait for multiple asynchronous results.

Can you give an example of using CompletableFuture?

Sure! You can use CompletableFuture to run tasks in parallel and combine their results, like fetching data from multiple APIs and aggregating the responses.