For Example I've "23/2/2010" (23th Feb 2010), I want to pass it to a function and the function returns day of week?
In this example, the function should return String "Tue".
Additionally, if just the day ordinal is desired, how can that be retrieved?
Yes. Depending on your exact case:
You can use
Calendar c = Calendar.getInstance(); c.setTime(yourDate); int dayOfWeek = c.get(Calendar.DAY_OF_WEEK);
if you need the output to be
Tue rather than 3 (Days of week are indexed starting at 1), instead of going through a calendar, just reformat the string:
new SimpleDateFormat("EE").format(date) (
EE meaning "day of week, short version")
if you have your input as string, rather than
Date, you should use
SimpleDateFormat to parse it:
you can use joda-time's
DateTime and call