判断某年是否是闰年
import java.util.Scanner;
public class LeapYear{
public static void main(String[] args){
Scanner scan = new Scanner(System.in);
System.out.println("请输入一个年份: ");
long year = scan.nextLong();
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");
}
}
}