The CompletableFuture<T> class received the following enhancements as part of the current Java platform:

• Added time-based enhancements:
• This enables completion based on lapsed time
• Delayed executions are now also supported

• Significant enhancement to subclasses:
  • Extending CompletableFuture is easier
  • Subclasses support alternative default executors

Specifically, the following methods were added in Java 9:

• newIncompleteFuture()
• defaultExecutor()
• copy()
• minimalCompletionStage()
• completeAsync()
• orTimeout()
• completeOnTimeout()
• delayedExecutor()
• completedStage()
• failedFuture()
• failedStage()