JDK8 的stream reduce性能测试对比

以下是测试代码：

public static void main(String args[]) {
        List<Integer> objects = new ArrayList<>();
        for (int i = 0; i < 100000000; i++) {
            objects.add(i);
        }
        
        long start1 = System.currentTimeMillis();
        int result1 = 0;
        for (int i = 0; i < objects.size(); i++) {
            result1 += objects.get(i);
        }
        System.out.println(result1);
        long end1 = System.currentTimeMillis();
        System.out.println("========传统写法MS==========" + (end1 - start1));


        long start2 = System.currentTimeMillis();
        int result = objects.stream().reduce(0, (a, b) -> a + b);
        System.out.println(result);
        long end2 = System.currentTimeMillis();
        System.out.println("=========JDK 8 stream写法=======" + (end2 - start2));
    }

结果是：
887459712
传统写法MS==142
887459712
===JDK 8 stream写法=4116

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