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How do I print out the value of this boolean? (Java)

Asked 2012-01-24T13:40:31.300
14

I have tried a few different methods, like print(boolean isLeapYear) and a few others, but I can not figure out how to get it to work. It always says that I have a missing class (boolean is primitive, does it need one?) Anyways, If the isLeapYear if-else statements are wrong, I'm not worried about those.. I just need to figure out how to print out the value of the boolean; any help / point in the right direction is greatly appreciated =]

import java.util.Scanner;

public class booleanfun    {
    boolean isLeapYear;

    public static void main(String[] args)
    {
        System.out.println("Enter a year to determine if it is a leap year or not: ");
        Scanner kboard = new Scanner(System.in);
        int year = kboard.nextInt();
    }
public boolean isLeapYear(int year)
  {
    if (year % 4 != 0)
        isLeapYear = false;

    else if ((year % 4 == 0) && (year % 100 == 0))
        isLeapYear = false;

    else if ((year % 4 == 0) && (year % 100 == 0) && (year % 400 == 0))
        isLeapYear = true;

    else
        isLeapYear = false;

System.out.println(isLeapYear);
System.out.println(boolean isLeapYear);

    return isLeapYear;
    }
}
java printing boolean
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1 Answer

2

There are a couple of ways to address your problem, however this is probably the most straightforward:

Your main method is static, so it does not have access to instance members (isLeapYear field and isLeapYear method. One approach to rectify this is to make both the field and the method static as well:

static boolean isLeapYear;
/* (snip) */
public static boolean isLeapYear(int year)
{
  /* (snip) */
}

Lastly, you're not actually calling your isLeapYear method (which is why you're not seeing any results). Add this line after int year = kboard.nextInt();:

isLeapYear(year);

That should be a start. There are some other best practices you could follow but for now just focus on getting your code to work; you can refactor later.

answered 2012-01-24T13:49:55.830

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