f.java

JAVA初学时的一些实验代码,希望可以对大家有帮助.

public class F{
public static void main(String args[]){
int month=4;
int year=1998;
int numdays=9;
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("year1998 Month 4 has"+numdays+"days.");
}
}