import utilities.*;
public class Time24{
 private int hour, minute;

 public Time24(int hour, int minute){
   this.hour = hour;
   this.minute = minute;
 }

 public Time24(){
  hour = 0;
  minute = 0;
 }

 public Time24(Time24 obj){
   obj.hour = hour;
   obj.minute = minute;
 }

 public void readTime(Time24 obj){
  int std = TastaturEingabe.readInt("Stunden: ");
  int min = TastaturEingabe.readInt("Minuten: ");
  hour = std;
  min = min;
 }

 public int getHour(){
 return hour;
 }

 public int getMinute(){
 return minute;
 }

 public void addTime(int min){
   if (minute < 0){
   throw new IllegalArgumentException("Min muss > 0 sein");
   }
   minute += min;
   this.normalizeTime();
 }

 public void setHour(int hour){
  this.hour = hour;
 }

 public void setMinute(int minute){
  this.minute = minute;
 }

 public void writeTime(){
 System.out.println(getHour() + ":" + getMinute());
 }

 public String toString(){
  return  getHour() + ":"+ getMinute();
 }

 private void normalizeTime(){
   while (minute > 59){
    minute -= 60;
    hour++;
   }

   while (hour > 23){
     hour -= 24;
 }
 }

 public static void main (String[] args){
 Time24 sanfrancisco, frankfurt, melbourne;
 sanfrancisco = new Time24(22,53);
 sanfrancisco.addTime(33);
 System.out.println(sanfrancisco.toString());
 sanfrancisco.normalizeTime();
 System.out.println(sanfrancisco.toString());
 }

}