Question

I Looking for a method that convert time string into Calendar look like this:

   public static Calendar stringToCalendar(String strDate, TimeZone timezone){
    String FORMAT_DATETIME = "yyyy-MM-dd'T'HH:mm:ss";
    SimpleDateFormat sdf = new SimpleDateFormat(FORMAT_DATETIME);
    sdf.setTimeZone(timezone);
    Date date = sdf.parse(strDate);
    Calendar cal = Calendar.getInstance(timezone);
    cal.setTime(date);
    return cal;
   }

This code above does not work.
For example: when I pass time string ‘2012-05-08T09:10:10‘ with pattern yyyy-MM-dd’T’HH:mm:ss and Timezone is GMT+7, the result (from Calendar object) should be: 2012-05-08T16:10:10
The problem is for some reasons, I don’t want to use Joda time. So, how can I do this?

Answer 1

Simply use a SimpleDateFormat and set the TimeZone on it. Then invoke the parse() method.

EDIT:

---

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.TimeZone;

public class temp2 {

    public static void main(String[] args) throws ParseException {
        String s = "2012-05-08T09:10:10";
        Calendar cal = stringToCalendar(s, TimeZone.getTimeZone("GMT+0"));
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        sdf.setTimeZone(TimeZone.getTimeZone("GMT+7"));
        System.err.println(sdf.format(cal.getTime()));
    }

    public static Calendar stringToCalendar(String strDate, TimeZone timezone) throws ParseException {
        String FORMAT_DATETIME = "yyyy-MM-dd'T'HH:mm:ss";
        SimpleDateFormat sdf = new SimpleDateFormat(FORMAT_DATETIME);
        sdf.setTimeZone(timezone);
        Date date = sdf.parse(strDate);
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        return cal;
    }

}

outputs:

2012-05-08 16:10:10
Where the difference is indeed 7 hours