Leap Year Calculator

import java.time.Year;

public class leapYear {
    public static void main(String[] args) {
        LeapYear(1700);
        LeapYear(1800);
        LeapYear(1900);
        LeapYear(2000);
        LeapYear(1805);
        LeapYear(-1600);
        LeapYear(2017);
        LeapYear(2024);
    }

    // Method 1 uses math method for leap year
    public static void LeapYear(int year) {
        System.out.println("Method 1");

        if (year < 0) {
            System.out.println(year + " Error: Not a Year\n");
        }

        if (year > 0) {
            yearGTZero(year);
            FuncIsLeapYear(year);
        }
    }


    public static void yearGTZero(int year) {
        int div4 = year % 4;
        int div100 = year % 100;
        int div400 = year % 400;

         /*
         Another way to put is:
         A leap year is a year that is divisible by 4 but not 100.
         If it's divisible by 100, it has to be divisible by 400.
          */

        if (
                ((div4 == 0) && (div100 > 0)) ||
                        ((div100 == 0) && (div400 == 0))
        ) {
            printOut(year, true);
        } else if (year > 0) {
            printOut(year, false);
        }

    }


    public static void FuncIsLeapYear(int year) {
        // Method 2 uses Year.isLeap function
        System.out.println("Method 2");
        if (year < 0) {
            System.out.println(year + " Error: Not a Year");

        }

        if (year > 0) {
            printOut(year, Year.isLeap(year));
        }
        System.out.println();
    }


    public static void printOut(int year, boolean result) {
        if (result) {
            System.out.println(year + " is a leap year");
        } else {
            System.out.println(year + " not a leap year");
        }

    }

}