По данному количеству секунд найти количество часов

public class Helper {
 
    enum TimeItems {MIN(60), HOUR(60*60), DAY(60*60*24), WEEK(60*60*24*7);
        final int sec;
 
    TimeItems(int sec) {
        this.sec = sec;
    }
 
    private int second() {return sec;}
}
 
    public static void main(String[] args) {
        int sec = 1_000_000_000;
        for (TimeItems ti : TimeItems.values())
            System.out.printf("\'%,d\' seconds = %,d %s%n",sec, sec/ti.second(), ti);
    }
}

long seconds = 12345L;
LocalTime time = LocalTime.ofSecondOfDay(seconds);
System.out.println("Full hours: " + time.getHour());

    public static void main(String[] args) {
        int seconds = 12345;
        
        System.out.println("Hours: " + seconds / 3600);
    }

System.out.println(java.util.concurrent.TimeUnit.SECONDS.toHours(10000));