TimeConverter

TimeHelper.java

public class TimeHelper{
    public static final SimpleDateFormat HMS_DATE_FORMAT = new SimpleDateFormat("hh:mm:ss");
    
    public static long toMillis(int hour, int minute, int second){
        return toSeconds(hour, minute, second) * 1000;
    }
    
    public static long toSeconds(int hour, int minute, int second){
        return (hour * 3600 + minute * 60 + second);
    }
    
    public static String formatDurationHMS(long millis){
        GregorianCalendar c = new java.util.GregorianCalendar();
        c.setTimeInMillis(mills);
        return HMS_DATE_FORMAT.format(c.getTime());
    }
}