[問題] 詭異的輸出結果
小弟是 Java 新手，如果問了蠢問題還請見諒
我寫個一個程式，可以由命令列輸入年/月來查詢該月有幾天
雖然說已經成功地將參數值傳入了
但是其中的 switch 卻好像毫無反應
還要請教各位，到底是發生什麼問題了
=============================程式碼==============================
import java.lang.Integer;
public class SwitchDemo2_1 {
public static void main(String[] args) {
int month = Integer.parseInt(args[1]);
int year = Integer.parseInt(args[0]);
int numDays = 0;
switch (month) {
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
numDays = 31;
break;
case 4:
case 6:
case 9:
case 11:
numDays = 30;
break;
case 2:
if (((year % 4 == 0) && !(year % 100 == 0)) || (year % 400 == 0))
numDays = 29;
else
numDays = 28;
break;
}
System.out.println("Number of Days = " + numDays);
}}
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