计算输入日期的下一天的nextDate()

同样是软件测试课程的作业，测试过程不解释，贴图贴代码。

 

 

 

 

 

public static ArrayList NextDate(int nowYear, int nowMonth, int nowDay)
    {
        ArrayList arr = new ArrayList();
        if (nowYear <= 3000 && nowYear >= 1000 && nowMonth <= 12 && nowMonth >= 1 && nowDay >= 1 && nowDay <= getDays(nowYear, nowMonth))
        {
            int nextYear;
            int nextMonth;
            int nextDay;
            if (nowDay == getDays(nowYear, nowMonth))
            {
                if (nowMonth == 12)
                {
                    nextYear = nowYear + 1;
                    nextMonth = 1;
                    nextDay = 1;
                }
                else
                {
                    nextYear = nowYear;
                    nextMonth = nowMonth + 1;
                    nextDay = 1;
                }
            }
            else
            {
                nextYear = nowYear;
                nextMonth = nowMonth;
                nextDay = nowDay + 1;
            }
            arr.Add(nextYear);
            arr.Add(nextMonth);
            arr.Add(nextDay);
        }
        else
        {
            arr.Add("错误年份");
            arr.Add("错误月份");
            arr.Add("错误天数");
        }
        return arr;
    }

    protected static bool isRun(int year)
    {
        if (year % 4 == 0 && year % 400 != 0)
        {
            return true;
        }
        return false;
    }

    protected static int getDays(int year, int month)
    {
        int days = 0;
        switch (month)
        {
            case 1:
            case 3:
            case 5:
            case 7:
            case 8:
            case 10:
            case 12: days = 31; break;
            case 2: days = isRun(year) ? 29 : 28; break;
            case 4:
            case 6:
            case 9:
            case 11: days = 30; break;
        }
        return days;
    }