code: public static Date addHours(final Date date, final int addHours)
  	{
  		final Calendar dateOnCalendar = Calendar.getInstance();
  		dateOnCalendar.setTime(date);
  		dateOnCalendar.add(Calendar.HOUR, addHours);
  		return dateOnCalendar.getTime();
  	}
docs: Adds hours to the given Date object and returns it. Note: you can add negative values too for
  get date in past.
  
  @param date
  The Date object to add the hours.
  @param addHours
  The days to add.
  @return The resulted Date object.