/*从键盘输入一个年份，判断是否是闰年*/

2               import java.util.*;

3                   public class J2_12{

4                       public static void main(String args[]){

5                         Scanner scanner = new Scanner(System.in); /*构造一个Scanner对象，其传入参数为System.in*/

6                               System.out.println("Please enter a year!");

7                             int year= scanner.nextInt(); /*读取一个int数值 */

8                       if(year % 4==0 && year % 100 !=0|| year % 400==0) /*判断是否为闰年*/

9                 System.out.println(+year+" IS A LEAP YEAR");

10                else

11              System.out.println(+year+" IS NOT A LEAP YEAR");

12                  }

13            }