Leap year - methods

Question

A common 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)

import java.util.Scanner;

public class LabProgram {

/* Define your method here */

public static void main(String[] args) {

/* Type your code here. */

}

}

Answer 1

import java.io.*;

import java.lang.NumberFormatException;

class LeapYear

{

private Console console;

public LeapYear()

{

this.console = System.console();

}

public boolean isLeapYear( int year)

{

boolean boolReturn = false;

if ((year % 4)==0)

{

if ((year % 100)==0)

{

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

}

else

{

boolReturn = true;

}

}

return(boolReturn);

}

public void Go()

{

try

{

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

String inbuff = console.readLine();

int year = Integer.parseInt(inbuff.trim());

boolean IsLeapYearFlag = this.isLeapYear(year);

System.out.print( year + " is ");

if (!IsLeapYearFlag) { System.out.print(" NOT "); }

System.out.println(" a leap year ");

}

//catch(IOException ex) { System.out.println("IO Exception occurs: invalid input or input error "); }

catch(NumberFormatException ex) { System.out.println("Number Format Exception occurs: invalid input "); }

}

public static void main (String args[])

{

LeapYear x = new LeapYear();

x.Go();

}

}