import java.util.Scanner; public clsss Main{ public static void main(String[]args){ Scanner sc = new Scanner(System.in); while(sc.hasNext()){ System.out.println("请输入一个年份判定例如2018"); String datestr = sc.next(); try{ int date = Integer.paresInt(datestr); if(date<=0){ System.out.println("请输入大于0的年份数据"); } else if((date%4==0&&date%100!=0)||date%400==0){ System.out.println("闰年"); }else{ System.out.println("平年"); } }catch{ System.out.println("输入的内容有误,请重新输入."); } } } }