RFR 8005696: Add CompletableFuture - JEP 155 (original) (raw)

Doug Lea dl at cs.oswego.edu
Wed Mar 27 19:46:55 UTC 2013

On 03/23/13 07:08, Doug Lea wrote:

There was a signature mismatch between the public public static CompletableFuture anyOf(CompletableFuture<?>... cfs) and the internal method performing most of the work: private static CompletableFuture<?> anyTree(...) ("" and "<?>" are subtly different.)

Thanks to Martin especially for knocking some sense into me about this. The type signature was incompatible, but changing to rather the made this updated version less useful (it could only return indication, not result). So it is now updated with a signature-correct version of anyOf with its original semantics.

Additionally, while being slightly disruptive anyway: This class was lacking a little convenience method found in other Future-based frameworks that surely will be requested. So now added:

 /**
  * Returns a new CompletableFuture that is already completed with
  * the given value.
  *
  * @param value the value
  * @return the completed CompletableFuture
  */
 public static <U> CompletableFuture<U> completedFuture(U value)

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