java判断相邻两个月份总天数

if (beigin == 1 || beigin == 2) {if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0) {renwu.setId(60);} else {renwu.setId(59);}} else if (beigin == 12 || beigin == 7) {renwu.setId(62);} else {renwu.setId(61);}