Unparseable date Exception java date pattern

 DateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS",
                    Locale.US);
            String s1 = "2011-11-19T00:00:00.000-03:00";
            Date d;
            try
            {
                d = sdf.parse(s1);
                String s2 = (new SimpleDateFormat("yyyyMMdd")).format(d);
                System.out.println(s2);
            }
            catch (ParseException e)
            {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

new SimpleDateFormat("EEE MMM dd HH:mm:ss zzz yyyy", Locale.ENGLISH);

System.out.println(Locale.getDefault());

yyyy-MM-dd HH:mm:ss

yyyy/MM/dd hh:mm:ss

yyyy-MM-dd'T'HH:mm:ssZ

SimpleDateFormat format=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");//change input date format here
Date date=format.parse("2015-09-21 10:42:48:000");
//Date date=format.parse(createdOn);//Here no need of subtracting 000 from your date
SimpleDateFormat format1=new SimpleDateFormat("dd-MMM-yyyy HH:mm:ss");
System.out.println(format1.format(date));