RecursiveTask 和 CyclicAction 两个例子的完整代码如下所示：
清单 8. RecursiveTask 和 CyclicAction 两个例子的完整代码
package tests;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import jsr166y.forkjoin.CyclicAction;
import jsr166y.forkjoin.ForkJoinPool;
import jsr166y.forkjoin.ForkJoinTask;
import jsr166y.forkjoin.RecursiveAction;
import jsr166y.forkjoin.RecursiveTask;
import jsr166y.forkjoin.TaskBarrier;
import org.junit.Test;