In the three examples shown in this chapter, we have used a lot of methods of the classes that forms the fork/join framework, but there are other interesting methods you have to know.
We have used the methods
invoke() from the
ForkJoinPool class to send tasks to the pool. We can use another method, named
submit(). The main difference between them is that the
execute() method sends the task to the
ForkJoinPool and immediately returns a void value, the
invoke() method sends the task to the
ForkJoinPool and returns when the task has finished its execution, and the
submit() method sends the task to the
ForkJoinPool and immediately returns a
Future object to control the status of the task and obtain its result.
In all the examples of this chapter, we have used classes based on the
ForkJoinTask class, but you can use the
ForkJoinPool tasks based on the
Callable interfaces. To do this, you can use the
submit() method, which has versions...