Transform Java Future into a CompletableFuture

Question

Java 8 introduces CompletableFuture, a new implementation of Future that is composable (includes a bunch of thenXxx methods). I\'d like to use this exclusively,

Answer 1

I published a little futurity project that tries to make better than the straightforward way in the answer.

The main idea is to use the only one thread (and of course with not just a spin loop) to check all Futures states inside, which helps to avoid blocking a thread from a pool for each Future -> CompletableFuture transformation.

Usage example:

Future oldFuture = ...;
CompletableFuture profit = Futurity.shift(oldFuture);