Calculate the number of days of the date of the date in the year entered.

day_09 Package; 
/ * 
The calculation of the date entered in the date of the days of the year 
 * / 
Import java.util.Scanner; 

public class the Test { 
    public static void main (String [] args) { 
        // enter dates 
        Scanner input = new Scanner (System.in); 
        System.out.print ( "enter date:"); 
        int year = input.nextInt (); 
        int = month The input.nextInt (); 
        int = input.nextInt day (); 
        / / number of days corresponding to 
        int = sumday getSumDay (year, month the, day); 
        // output 
        System.out.println (year + "in" + + month the "month" day + + "day" + "is the" year + + "in the first" + sumday + "days"); 
    } 
 
    Private getSumDay static int (int year,int month, int day) {
        int = 0 days;
        for (int i = 1; i <month; i++) {
            days += getMonthDay(year,i);
        }
        return days+day;
    }

    private static int getMonthDay(int year,int month) {
        int day=0;
        switch (month) {
            case 1:
            case 3:
            case 5:
            case 7:
            case 8:
            case 10:
            case 11:
                day=31;
                break;
            case 2:
                //如果是闰年：29天，否则是：28天
                day=getDay(year);
                break;
            case 4:
            case 6:
            case 9:
            case 12:
                day=30;
                break;
        }
        return day;
    }

    private static int getDay(int year) {
        if(year%4==0 || (year%100==0 && year%400==0))
            return 29;
        else
            return 28;
    }
}