By using this code :
SimpleDateFormat format = new SimpleDateFormat(\"yyyy-MM-dd HH:mm:ss\");
Date date = format.parse(dtStart);
return date;
Calendar calendar = Calendar.getInstance();
DateFormat date= new SimpleDateFormat("EEEE", Locale.getDefault());
String dayName= date.format(calendar.getTime()); //Monday
date= new SimpleDateFormat("dd", Locale.getDefault());
String dayNumber = date.format(calendar.getTime()); //20
date= new SimpleDateFormat("MMM", Locale.getDefault());
String monthName= date.format(calendar.getTime()); //Apr
date= new SimpleDateFormat("MM", Locale.getDefault());
String monthNumber= date.format(calendar.getTime()); //04
date= new SimpleDateFormat("yyyy", Locale.getDefault());
String year= date.format(calendar.getTime()); //2020
that's it. enjoy