public class LeapYear {
    public static void main(String[] args) {
        for (int i = 1000; i <= 2000; i++) {
            if (isLeapYear(i)) {
                System.out.println(i + "是闰年");
            }
        }
    }

    public static boolean isLeapYear(int year) {
        if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0) {
            return true;
        } else {
            return false;
        }
    }
}