traversal of time

public Calendar getDate(String dateString){
		int year = Integer.parseInt(dateString.substring(0,dateString.indexOf("-")));
		int mounth =  Integer.parseInt(dateString.substring(dateString.indexOf("-")+1,dateString.lastIndexOf("-")));
		int day = Integer.parseInt(dateString.substring(dateString.lastIndexOf("-")+1,dateString.lastIndexOf(" ")));
		int hour  = Integer.parseInt(dateString.substring(dateString.lastIndexOf(" ")+1,dateString.indexOf(":")));
		int minutes  = Integer.parseInt(dateString.substring(dateString.indexOf(":")+1,dateString.lastIndexOf(":")));
		int second  = Integer.parseInt(dateString.substring(dateString.lastIndexOf(":")+1));
		Calendar date = Calendar.getInstance();
		date.set(year, mounth-1, day ,hour,minutes,second);
		return date;
	}

Calendar beginDate = getDate("2014-12-31 12:00:00");
Calendar endDate = getDate("2015-1-31 12:00:00");
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
while (beginDate.compareTo(endDate) <= 0) {
    String currentString = sdf.format(beginDate.getTime());
    sysout(currentString);
    beginDate.set(Calendar.DATE, beginDate.get(Calendar.DATE) + 1);
}