On time for the exam

import java.util.Scanner;

public class OnTimeForTheExam {
    public static void main(String[] args) {
        Scanner myScan = new Scanner(System.in);
        int hourExam = Integer.parseInt(myScan.nextLine());
        int minutesExam = Integer.parseInt(myScan.nextLine());
        int hourArrival = Integer.parseInt(myScan.nextLine());
        int minutesArrival = Integer.parseInt(myScan.nextLine());
        int timeExam=hourExam*60+minutesExam;
        int timeArrival=hourArrival*60+minutesArrival;
        int diff=timeExam-timeArrival;
        String text="before";
        if (diff<0){
            System.out.println("Late");
            text="after";
        }else if (diff<=30){
            System.out.println("On time");
        }else{
            System.out.println("Early");
        }
        diff=Math.abs(diff);
        if (diff>0&&diff<60){
            System.out.printf("%d minutes %s the start",diff,text);
        }else if (diff>=60){
            System.out.printf("%d:%02d hours %s the start",diff/60,diff%60,text);
        }
    }
}