ScheduledFutureTask(Callable<V> callable,long ns){
  super(callable);
  this.time=ns;
  this.period=0;
  this.sequenceNumber=sequencer.getAndIncrement();
}

ScheduledFutureTask ( Callable < V > callable , long ns ) { super ( callable ) ; this . time = ns ; this . period = 0 ; this . sequenceNumber = sequencer . getAndIncrement ( ) ; }
creates a one - shot action with given nanotime - based trigger time .
