Futures

You can think of Future as an entity that represents a deferred computation that may or may not have been completed. It is an object that represents the outcome of a computation to be completed in future. We can query about the status of the deferred computation using the methods exposed by the Future class. Some of the useful ones are:

• done: Returns true if the execution of the callable was successfully completed or cancelled.

• cancel: Attempts to cancel execution of a callable. Note if the ...