Your program must define and call the following function. The function should return true if the input year is a leap year and false otherwise. (Java)

Question

A year in the modern Gregorian Calendar consists of 365 days. In reality, the earth takes longer to rotate around the sun. To account for the difference in time, every 4 years, a leap year takes place. A leap year is when a year has 366 days: An extra day, February 29th. The requirements for a given year to be a leap year are:

1) The year must be divisible by 4

2) If the year is a century year (1700, 1800, etc.), the year must be evenly divisible by 400

Some example leap years are 1600, 1712, and 2016.

Write a program that takes in a year and determines whether that year is a leap year.

Ex: If the input is:

1712

the output is:

1712 is a leap year.

Ex: If the input is:

1913

the output is:

1913 is not a leap year.

Your program must define and call the following method. The method should return true if the input year is a leap year and false otherwise.

public static boolean isLeapYear(int userYear)

Note: This is a lab from a previous chapter that now requires the use of a method.

Answer 1

The following solution has possibly the most compact implementation for the isLeapYear method:

import java.util.Scanner;

public class LeapYear {

public static void main(String args[]) {

System.out.print("Enter a year: ");

Scanner scanner = new Scanner(System.in);

int year = Integer.parseInt(scanner.nextLine());

scanner.close();

System.out.println(year + " is" + (isLeapYear(year) ? "" : " not") + " a leap year");

}

private static boolean isLeapYear(int year) {

return ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);

}

}

Answer 2

import java.io.*;

class LeapYear

{

public static boolean isLeapYear( int userYear)

{

boolean boolReturn=false;

if ((userYear %100)==0)

{

boolReturn = ((userYear %400)==0);

}

else

{

boolReturn = ((userYear %4)==0);

}

return boolReturn ;

}

public static void main( String args[])

{

LeapYear leapYear = new LeapYear();

Console console = System.console();

System.out.print(" Please input the year :>");

String inbuff = console.readLine();

int year = Integer.parseInt(inbuff);

boolean boolReturn = leapYear.isLeapYear(year);

String verb = (boolReturn) ? " is " : " is not ";

String outbuff = " Year " + year + verb + " a leap year ";

System.out.println(outbuff);

}