Date currentTime = Calendar.getInstance().getTime();
SimpleDateFormat dateformat = new SimpleDateFormat("dd.MM.yyyy");
String datetime = dateformat.format(currentTime);
String date = DateFormat.getDateInstance().format( new Date() );

d: day 1,2,11
dd: day 01,02,11
M: Month 1,2,3,11
MM: Month 01,02,03,11
MMM: Month Jan, Feb
MMMM: Month Januar ...
yy: Year 18, 22
yyyy: Year 2018, 2022