Wsrtjtyk

So I'm a little confused as to why this is happening, here's my code:

public static void main (String args)

{

    Scanner kb = new Scanner(System.in);



    do

    {

        Scanner in = new Scanner(System.in);

        System.out.println("Enter a time in 24-hour notation: ");

        String time = in.nextLine();



        int colonIndex = time.indexOf(":");

        int hours = Integer.parseInt(time.substring(0, colonIndex));

        int minutes = Integer.parseInt(time.substring(colonIndex + 1));



        boolean legalTime = ((hours < 24 && hours > 0) && (minutes < 60 && minutes >= 0));

        boolean addZero = minutes < 10;

        boolean pm = hours > 12;



        if(legalTime)

        {

            if(pm && addZero)

            {

                int newHour = hours - 12;

                System.out.printf("That is the same as"

                        + "n%d:0%d PMn", newHour, minutes);

            }

            else if(pm && !addZero)

            {

                hours = hours - 12;

                System.out.printf("That is the same as"

                        + "n%d:%d PMn", hours, minutes);

            }

            else if (!pm && addZero)

            {

                System.out.printf("That is the same as"

                        + "n%d:0%d AMn", hours, minutes);

            }

            else

            {

                System.out.printf("That is the same as"

                        + "n%d:%d AMn", hours, minutes);

            }

        }

        try

        {

            if(!legalTime)

            {

                throw new Exception("Exception: there is no such time as " + time);

            }

        }

        catch(Exception e)

        {

            System.out.println(e.getMessage()

                    + "nAgain? (y/n)");

            continue;

        }



        System.out.println("Again? (y/n)");



    }while(Character.toUpperCase(kb.next().charAt(0)) == 'Y');



}

My code itself is not the issue, it's that the condition of a do-while loop only recognizes booleans outside of the do-while, which in my mind makes it quite frustrating to make the condition be affected by whatever is inside the block. What I want to do is make my code run, and then ask the user if they want to run it again, denoted by "y" or "n." I can't put

!time.charAt(0) == 'y'

As the condition because the string "time" is defined inside the do-while loop, so I made some weird band-aid by using one scanner just for the condition input before the do-while begins, and using another one inside the body. I know this is bad, but I can't think of a simple way to create a boolean for this condition that isn't inside the do-while loop, am I missing something?

Just declare a boolean before the loop instead of the extra Scanner, and update this boolean inside the loop:

boolean again = true;

do {

    ...

    System.out.println("Again? (y/n)");

    again = Character.toUpperCase(in.next().charAt(0)) == 'Y';

} while (again);