CompletableFuture
A Java abstraction for composing asynchronous computations, completion stages, failures, and dependent actions.
Technical Context
Its value is composition rather than merely running code on another thread. Production use requires deliberate executor selection, timeout policy, exception propagation, cancellation semantics, and awareness that blocking join/get calls can erase the benefits of asynchronous composition.
Related Concepts
- ExecutorService
- Future
- asynchronous programming
- structured concurrency