Навреме за изпит

import java.util.Scanner;
public class domashno {
    public static void main(String[ ] args) {
        Scanner scan = new Scanner(System.in);
        int startingHour = Integer.parseInt(scan.next("What is the starting hour "));
        int startingMinutes = Integer.parseInt(scan.next("What is the starting minutes "));
        int arrivalHour= Integer.parseInt(scan.next("What is the arrival hour "));
        int arrivalMinutes= Integer.parseInt(scan.next("What is the arrival minutes "));
        int dist;
        if(arrivalMinutes>startingMinutes){
            dist=arrivalMinutes-startingMinutes;
        }else{
            dist=startingMinutes-arrivalMinutes;
        }
        if(dist<30){
            System.out.println("youre on time "+ Integer.toString(dist)+" minutes before the start");
        }
        if(startingHour>0 && startingHour<24 && arrivalHour>0 && arrivalHour<24){
            if(arrivalHour>startingHour){
                if(arrivalMinutes>startingMinutes){
                    System.out.println("youre late by "+ Integer.toString(arrivalHour-startingHour)+" hours and "+Integer.toString(arrivalMinutes-startingMinutes)+" minutes");
                }else{
                    System.out.println("youre late by "+ Integer.toString(arrivalHour-startingHour-1)+" hours and "+Integer.toString(60-startingMinutes)+" minutes");
                }
            }
            if(arrivalHour<startingHour && dist>30){
                System.out.println("youre early by "+ Integer.toString(startingHour-arrivalHour-1)+" hours and "+Integer.toString(60-arrivalMinutes)+" minutes");
            }
            if(arrivalHour==startingHour){
                if(arrivalMinutes>startingMinutes){
                    System.out.println("youre late by "+ Integer.toString(arrivalHour-startingHour)+" hours and "+Integer.toString(arrivalMinutes-startingMinutes)+" minutes");
                }
                if(arrivalMinutes<startingMinutes && dist>30){
                    System.out.println("youre early by 0 hours and "+(Integer.toString(startingMinutes-arrivalMinutes))+" minutes");
                }
            }

        }else{
            System.out.println("Youve entered an invalid hour");
        }



    }
}