Which type of ExecutorService supports the execution of tasks after a fixed delay?
A.
DelayedExecutorService
B.
ScheduledExecutorService
C.
TimedExecutorService
D.
FixedExecutorService
E.
FutureExecutorService
Explanation:
The ScheduledExecutorService interface supplements the methods of its parent ExecutorService with schedule, which executes a Runnable or Callable task after a specified delay. In addition, the interface defines scheduleAtFixedRate and scheduleWithFixedDelay, which executes specified tasks repeatedly, at defined intervals.Note:The java.util.concurrent package defines three executor interfaces:
*Executor, a simple interface that supports launching new tasks. *ExecutorService, a subinterface of Executor, which adds features that help manage the lifecycle, both of the individual tasks and of the executor itself. *ScheduledExecutorService, a subinterface of ExecutorService, supports future and/or periodic execution of tasks.
Reference: The Java Tutorials,Executor Interfaces
B
+1