Java tutorial
import java.text.DateFormatSymbols; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Locale; public class Main { public static void main(String[] args) { DateFormatSymbols symbols = new DateFormatSymbols(new Locale("en", "US")); String[] defaultDays = symbols.getShortWeekdays(); for (int i = 0; i < defaultDays.length; i++) { System.out.print(defaultDays[i] + " "); } System.out.println(); String[] capitalDays = { "", "SUN", "MON", "TUE", "WED", "THU", "FRI", "SAT" }; symbols.setShortWeekdays(capitalDays); String[] modifiedDays = symbols.getShortWeekdays(); for (int i = 0; i < modifiedDays.length; i++) { System.out.println(modifiedDays[i] + " "); } SimpleDateFormat formatter = new SimpleDateFormat("E", symbols); Date today = new Date(); String result = formatter.format(today); System.out.println(result); } }