闰年:被4整除而不能被100整除,或者可以被400整除
public class LeapYear {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.print("Enter a year");
int year = input.nextInt();
boolean isLeapYear = (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0);
System.out.println(year + " is a leap year? " + isLeapYear);
}
}