System.out.println(time);     //Sun Oct 22 00:00:00 GMT+08:00 2017

SimpleDateFormat sdf = new SimpleDateFormat("EEE MMM dd HH:mm:ss z yyyy",Locale.US);
        TimeZone tz = TimeZone.getTimeZone("GMT+8");
        
        sdf.setTimeZone(tz);
        Date s = null;
        String da = null;
        Date strToDate = null;
        try {
            s = sdf.parse(time);
            System.out.println(s);    //  Sun Oct 22 00:00:00 CST 2017
            sdf = new SimpleDateFormat("yyyy-MM-dd");
            da = sdf.format(s);
            System.out.println(da);   //  2017-10-22
            strToDate = sdf.parse(da);
        } catch (ParseException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }