APCS-Exercises/TimeUntil.java at master · kibby111701/APCS-Exercises · GitHub

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import java.util.Scanner;
import java.time.LocalDateTime;

public class TimeUntil{
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int currentHour = LocalDateTime.now().getHour();
        int currentMinute = LocalDateTime.now().getMinute();
        int currentSecond = LocalDateTime.now().getSecond();
        int futureHour, futureMinute, futureSecond;
        int hourDiff, minuteDiff, secondDiff;
        String futureTime;

        if (currentHour > 12){
            currentHour-=12;
        }
        System.out.println(currentHour);
        System.out.println(currentMinute);
        System.out.println(currentSecond);

        System.out.println("Enter the future hour");
        futureHour = scan.nextInt();
        System.out.println("Enter the future minute");
        futureMinute = scan.nextInt();
        System.out.println("Enter the future second");
        futureSecond = scan.nextInt();

        hourDiff = futureHour - currentHour;
        minuteDiff = futureMinute - currentMinute;
        secondDiff = futureSecond - currentSecond;

        if (hourDiff < 0){
            hourDiff += 12;
        }

        if (minuteDiff < 0){
            minuteDiff+=60;
            hourDiff -= 1;
            if (hourDiff < 0){
                hourDiff += 12;
            }
        }

        if (secondDiff < 0){
            secondDiff+= 60;
            minuteDiff -= 1;
            if (minuteDiff < 0){
                minuteDiff+=60;
                hourDiff -= 1;
                if (hourDiff < 0){
                    hourDiff += 12;
                }
            }

        }

        System.out.println("The difference is:");

        if (hourDiff == 0)
        {
            if (minuteDiff == 0)
            {
                if (secondDiff == 0)
                {
                    System.out.println("These are the same time");
                }
                else
                {
                    System.out.println(secondDiff + " seconds");
                }
            }
            else if (secondDiff == 0)
            {
                System.out.println(minuteDiff + " minutes");
            }
            else
            {
                System.out.println(minuteDiff + " minutes and " + secondDiff + " seconds");
            }


        }
        else if (minuteDiff == 0)
        {
            if (secondDiff == 0)
            {
                System.out.println(hourDiff + " hours");
            }
            else
            {
                System.out.println(hourDiff + " hours and " + secondDiff + " seconds");
            }
        }
        else if (secondDiff == 0)
        {
            System.out.println(hourDiff + " hours and " + minuteDiff + " minutes");
        }
        else
        {
            System.out.println(hourDiff + " hours, " + minuteDiff + " minutes and " + secondDiff + " seconds");
        }


    }


}