date - Java SimpleDateFormat not working

I am displaying the date and time in Android with this format:
2015-11-25 23:25:00

How can I change it to the following format?
2015-11-25

I wrote some code ,but not working correctly.

    public static Date toDate(boolean isCurrentDate, String dateString) {
    Date date=null;
    DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
    try {
        if (isCurrentDate)

            date = new Date();
        else
            date = formatter.parse(dateString);
        System.err.println("Printresult" + formatter.parse(formatter.format(date)));

    } catch (ParseException e1) {
        e1.printStackTrace();
    }

    System.err.println("Printresult2" + date.toString());

    return date;
}

I log and result is like this

Wed Nov 25 00:00:00 GMT+00:00 2015

How i can change date format like this : ? (2015-11-25)