提取方法

class SomeClass {

    public static void main(String[] args) {
        int values[] = {1, 2, 3, 4, 5};
        int sum = 0;
        int num = 0;

        for (int n : values) {
            sum += n;
            num++;
        }

        System.out.println("Sum: " + sum + " - Num: " + num);
    }
}

class SomeClass {

    public static void main(String[] args) {
        Statistics result = getStatistics();

        System.out.println("Sum: " + result.sum() + " - Num: " + result.num());
    }

    private static Statistics getStatistics() {
        int values[] = {1, 2, 3, 4, 5};
        int sum = 0;
        int num = 0;

        for (int n : values) {
            sum += n;
            num++;
        }
        Statistics result = new Statistics(sum, num);
        return result;
    }

    private record Statistics(int sum, int num) {
    }
}