判断某年是否为闰年

import java.util.Scanner;
public class LeapYear {
public static void main(String[] arg){
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!");
}
}
}