import java.lang.*;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
 
class Main
{
	public static void main (String[] args) throws java.lang.Exception {
        String date1 = "05.02.2013, 13:38:14";
        String date2 = "05.02.2013, 09:38:14";
        System.out.println(getOlder(date1, date2)); // 05.02.2013, 13:38:14
        System.out.println(getOlder(date2, date1)); // 05.02.2013, 13:38:14
    }
 
    public static String getOlder(String one, String two) throws ParseException {
        Date dateOne = new SimpleDateFormat("dd.MM.yyyy, HH:mm:ss").parse(one);
        Date dateTwo = new SimpleDateFormat("dd.MM.yyyy, HH:mm:ss").parse(two);
        if (dateOne.compareTo(dateTwo) > -1) {
            return one; // or return dateOne;
        }
        return two; // or return dateTwo;
    }
}

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