How do I convert the date from one format to another date object in another format without using any deprecated classes?

Question

I'd like to convert a date in date1 format to a date object in date2 format.

    SimpleDateFormat simpleDateFormat = new SimpleDateFormat("MMMM dd, yyyy");     SimpleDateFormat simpleDateFormat1 = new SimpleDateFormat("yyyyMMdd");     Calendar cal = Calendar.getInstance();     cal.set(2012, 8, 21);     Date date = cal.getTime();     Date date1 = simpleDateFormat.parse(date);     Date date2 = simpleDateFormat.parse(date1);     println date1     println date2 

Answer 1

Use SimpleDateFormat#format:

DateFormat originalFormat = new SimpleDateFormat("MMMM dd, yyyy", Locale.ENGLISH); DateFormat targetFormat = new SimpleDateFormat("yyyyMMdd"); Date date = originalFormat.parse("August 21, 2012"); String formattedDate = targetFormat.format(date);  // 20120821 

Also note that parse takes a String, not a Date object, which is already parsed.