public?static?void?main(String[]?args)?{
????Scanner?input?=?new?Scanner(System.in);
????Exercises?exe?=?new?Exercises();
????System.out.print("請(qǐng)輸入要計(jì)算的日期:");?//?2018-09-26
????int?day?=?exe.getDay(input.next());
????System.out.println(day);
}

/**
?*?獲取輸入值所對(duì)應(yīng)該年的第幾天
?*
?*?@param?date
?*?@return
?*/
public?int?getDay(String?date)?{
????String[]?ymd?=?date.split("-");
????int?inputYear?=?Integer.valueOf(ymd[0]);
????int?inputMonth?=?Integer.valueOf(ymd[1]);
????int?inputDay?=?Integer.valueOf(ymd[2]);
????int?day?=?0;?//?天數(shù)
????Exercises?exe?=?new?Exercises();
????for?(int?i?=?1;?i?<=?(inputMonth?-?1);?i++)?{
????????day?=?day?+?exe.getMonthLastDay(i,?inputYear);
????}
????return?day?+?inputDay;
}

/**
?*?獲取每個(gè)月的天數(shù)
?*
?*?@param?month
?*?@param?year
?*?@return
?*/
public?int?getMonthLastDay(int?month,?int?year)?{
????int?day?=?31;
????switch?(month)?{
????????case?4:
????????case?6:
????????case?9:
????????case?11:
????????????day?=?30;
????????????break;
????????case?2:
????????????if?(year?%?400?==?0??||?(year?%?4?==?0?&&?year?%?100?!=?0))?{?//?判斷是否是閏年
????????????????day?=?29;
????????????}?else?{
????????????????day?=?28;
????????????}
????????????break;
????}
????return?day;
}