JDK 7 中的 Fork/Join 模式

            }
        };
        int n = 3;
        CyclicAction[] actions = new CyclicAction[n];
        for (int i = 0; i < n; ++i) {
            final int index = i;
            actions[i] = new CyclicAction(b) {
                protected void compute() {
                    System.out.println("I'm working " + getCycle() + " "
                            + index);
                    try {
                        Thread.sleep(500);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            };
        }
        for (int i = 0; i < n; ++i)
            actions[i].fork();
        for (int i = 0; i < n; ++i)
            actions[i].join();
    }
}

public class TestForkJoin {
    @Test
    public void testBarrier () throws InterruptedException, ExecutionException {
  System.out.println("\ntesting Task Barrier ...");
        ForkJoinTask fjt = new ConcurrentPrint();
        ForkJoinPool fjpool = new ForkJoinPool(4);
        fjpool.submit(fjt);
        fjpool.shutdown();
    }

    @Test
    public void testFibonacci () throws InterruptedException, ExecutionException {
     System.out.println("\ntesting Fibonacci ...");
  final int num = 14; //For demo only
        ForkJoinTask<Integer> fjt = new Fibonacci(num);
        ForkJoinPool fjpool = new ForkJoinPool();
        Future<Integer> result = fjpool.submit(fjt);

        // do something
        System.out.println("Fibonacci(" + num + ") = " + result.get());
    }
}
 

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