import java.util.Scanner; public class JudgeYear {      public static void main(String args[]){          Scanner s=new Scanner(System.in);     int year = 0;     while(year<=0){         System.out.print("请输入一个年份：");         year=s.nextInt();         continue;     }              IsLeapyear(year); } private static boolean IsLeapyear(int year) {     if(year%4==0 && year%100!=0)     {         System.out.println(year+"年是闰年");         return true;     }     else if (year%400==0) {         System.out.println(year+"年是闰年");         return true;     }     else {         System.out.println(year+"年是平年");         return false;     } } }