예제- 달력(일수/윤년/평년)

public static void main(String[] args) {

int year = 2018;

int month = 1;

int days_of_month=0;

month =2;

switch (month) {

case 1: case 3: case 5: case 7: case 8: case 10: case 12:

days_of_month = 31;

break;

case 4: case 6: case 9: case 11:

days_of_month = 30;

break;

case 2:

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

days_of_month = 29;

else

days_of_month = 28;

break;

}

System.out.println(days_of_month);

}