Quick Answer
Future: get() blocks the calling thread, no callbacks, can't compose multiple futures, limited error handling. CompletableFuture: non-blocking callbacks (thenApply, thenAccept), composable (thenCompose, thenCombine), built-in exception handling (exceptionally, handle), can be manually completed (complete(), completeExceptionally()). CompletableFuture is strictly superior for complex async workflows.
Answer
Future is limited; get() is blocking and lacks chaining. CompletableFuture supports non-blocking operations, chaining, combination, and exception handling. More powerful for async workflows.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
