判断闰年（函数）

public class runnian
{
public static int qiurunnian(int n)
     {
        int x=n;
if((x%4==0&&x%100!=0)||x%400==0)       
        return 1; 
else
return 0;   
    }
public static void main(String[] args)
{
int n=1998;
if(qiurunnian(n)==1)
System.out.println(n+"是闰年");
else
System.out.println(n+"不是闰年");
}
}