import java.util.Scanner;
public class year {
public static void main(String[] args) {
Scanner scan=new Scanner(System.in);
System.out.println("请输入一个年份");
long year;
try
{
year = scan.nextLong();
if(year%4==0&&year%100!=0||year%400==0){
System.out.println(year+"是润年!");
}
else{
System.out.println(year+"不是润年!");
}
} catch(Exception e){
System.out.println("您输入的不是合法的年份");
}
}
}
特别注意计算方法:year%4==0&&year%100!=0||year%400==0