Java Coding Problems

215. Fork/join framework and compareAndSetForkJoinTaskTag()

Now, that we are familiar with the fork/join framework, let's see another problem. This time let's assume that we have a suite of ForkJoinTask objects that are interdependent. The following diagram can be considered a use case:

Here is the description of the preceding diagram:

• TaskD has three dependencies: TaskA, TaskB, and TaskC.
• TaskC has two dependencies: TaskA and TaskB.
• TaskB has one dependency: TaskA.
• TaskA has no dependencies.

In code lines, we will shape it as follows:

ForkJoinPool forkJoinPool = ForkJoinPool.commonPool();Task taskA = new Task("Task-A", new Adder(1));Task ...