public class Main {
public static void main(String[] arguments) {//时 代 J a v a 公 众 号 - N o w J a v a . c o m 提 供
int yearIn = 2012;
int monthIn = 1;
if (arguments.length > 0)
monthIn = Integer.parseInt(arguments[0]);
if (arguments.length > 1)
yearIn = Integer.parseInt(arguments[1]);
System.out.println(monthIn + "/" + yearIn + " has "
+ countDays(monthIn, yearIn) + " days.");
}
static int countDays(int month, int year) {
int count = -1;/**from 时 代 J a v a - N o w J a v a . c o m**/
switch (month) {
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
count = 31;
break;
case 4:
case 6:
case 9:
case 11:
count = 30;
break;
case 2:
if (year % 4 == 0)
count = 29;
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