Bissextile

gistfile1.java

import java.util.Scanner;
class Bissextile{
    public static void main(String[] args) {
        System.out.print("请输入年份");
        int year;
        Scanner scanner = new Scanner(System.in);
        year = scanner.nextInt();
        if (year < 0 || year > 9999){
            System.out.println("年份有误，程序退出！");
            System.exit(0);
        }
        if ((year % 4 == 0)) && (year % 100 != 0) || (year % 400 == 0))
        System.out.println(year+"是闰年");
        else
        System.out.println(year+"不是闰年");
    }
}