import javax.swing.*;
import java.text.SimpleDateFormat;


public class e
{
    public static void main(String[] args)
    {
       
        // Variabler

        int start = 0;
        int end = 0;

       
        int startHour = 0;
        int startMinute = 0;
        int startSecond = 0;
       
        int endHour = 0;
        int endMinute = 0;
        int endSecond = 0;
       
        //Inmatning

        startHour = Integer.parseInt(JOptionPane.showInputDialog("Start Hour"));
        startMinute = Integer.parseInt(JOptionPane.showInputDialog("Start Minute"));
        startSecond = Integer.parseInt(JOptionPane.showInputDialog("Start Second"));
       
        endHour = Integer.parseInt(JOptionPane.showInputDialog("End Hour"));
        endMinute = Integer.parseInt(JOptionPane.showInputDialog("End Minute"));
        endSecond = Integer.parseInt(JOptionPane.showInputDialog("End Second"));
       
        //Bearbeting
       

       
   
        start = startHour*60*60 + startMinute*60 + startSecond;
        end = endHour*60*60 + endMinute*60 + endSecond;
       
        startHour -= start / 3600;
        endHour -= end / 3600;
       
        startMinute = start / 60;
        endMinute = end / 60;
       
        startSecond = start / 60;
        endSecond = end / 60;
       
       
       
        //Utskrift
       



        JOptionPane.showMessageDialog(null, " Time Result: " + (endHour - startHour) + " Hours " + (endMinute - startMinute) + " Minutes " + (endSecond - startSecond) + " Seconds ");

       
    }
} 

if(endMinute>60)
{
  ?????
}

int seconds = end - start;
int hours = seconds/3600;
int minutes = (seconds % 3600)/60;
seconds = seconds % 60;

JOptionPane.showMessageDialog(null, " Time Result: " + (hours) + " Hours " + (minutes) + " Minutes " + (seconds) + " Seconds ");

import javax.swing.*;
import java.text.SimpleDateFormat;

public class e
{
    public static void main(String[] args)
    {
        int startHour = Integer.parseInt(JOptionPane.showInputDialog("Start Hour"));
        int startMinute = Integer.parseInt(JOptionPane.showInputDialog("Start Minute"));
        int startSecond = Integer.parseInt(JOptionPane.showInputDialog("Start Second"));
       
        int endHour = Integer.parseInt(JOptionPane.showInputDialog("End Hour"));
        int endMinute = Integer.parseInt(JOptionPane.showInputDialog("End Minute"));
        int endSecond = Integer.parseInt(JOptionPane.showInputDialog("End Second"));
       
        int start = startHour*60*60 + startMinute*60 + startSecond;
        int end = endHour*60*60 + endMinute*60 + endSecond;
      
        int seconds = end - start;
        int hours = seconds/3600;
        int minutes = (seconds % 3600)/60;
        seconds = seconds % 60;

        JOptionPane.showMessageDialog(null, " Time Result: " + (hours) + " Hours " + (minutes) + " Minutes " + (seconds) + " Seconds ");
    }
}