How to get the weekday of a Date?

// kotlin

val calendar = Calendar.getInstance()

val dateInfo = DateFormat.getDateInstance(DateFormat.FULL).format(calendar.time)

data.text = dateInfo

You can get the day-integer like that:

Calendar c = Calendar.getInstance();
c.setTime(yourdate); // yourdate is an object of type Date

int dayOfWeek = c.get(Calendar.DAY_OF_WEEK); // this will for example return 3 for tuesday

If you need the output to be "Tue" rather than 3, instead of going through a calendar, just reformat the string: new SimpleDateFormat("EE").format(date) (EE meaning "day of week, short version")

Taken from here: How to determine day of week by passing specific date?