Java的根据年月计算月份有多少天

public class MonthDaysUtil {
    //获取月份的天数
    public static int getMonthDays(int year, int month) {

        if (month == 2) {

            if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)) {

                return 29;

            } else {

                return 28;

            }

        } else if (month == 4 || month == 6 || month == 9 || month == 11) {

            return 30;

        } else {

            return 31;

        }
    }
}