import java.util.Scanner; public class LeapYear1 { public static boolean isleapyear(int year) { return (year%4==0&&year%100!=0)||year%400==0 ? true:false; } public static void main(String[] args) { Scanner sc = new Scanner(System.in); System.out.println("请输入一个年份："); int year; while(sc.hasNext()) { year = sc.nextInt(); if(year<0) System.out.println("输入的年份有误！"); else { System.out.println(year+"年"+(isleapyear(year) ? "是闰年":"是平年")); } }sc.close(); } }