CompletableFuture , which was introduced in Java 8, provides an easy way to write asynchronous, non-blocking, and multi-threaded code.

What is CompletableFuture used for?

CompletableFuture is used for asynchronous programming in Java. Asynchronous programming is a means of writing non-blocking code by running a task on a separate thread than the main application thread and notifying the main thread about its progress, completion or failure.

What is CompletableFuture?

A CompletableFuture is an extension to Java's Future API which was introduced in Java 8. A Future is used for asynchronous Programming. It provides two methods, isDone() and get(). The methods retrieve the result of the computation when it completes.