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Theformatmethod of theSimpleDateFormatclass returns aStringcomposed of digits and symbols. For example, in theString"Friday, April 10, 1998," the symbols are "Friday" and "April." If the symbols encapsulated inSimpleDateFormatdon't meet your needs, you can change them with theDateFormatSymbols. You can change symbols that represent names for months, days of the week, and time zones, among others. The following table lists the
DateFormatSymbolsmethods that allow you to modify the symbols:
DateFormatSymbolMethodsSetter Method Example of a Symbol the Method Modifies setAmPmStringsPM setErasAD setMonthsDecember setShortMonthsDec setShortWeekdaysTue setWeekdaysTuesday setZoneStringsPST The following example invokes
setShortWeekdaysto change the short names of the days of the week from lowercase to uppercase characters. The full source code for this example is inDateFormatSymbolsDemo. The first element in the array argument of
setShortWeekdaysis a nullString. Therefore the array is one-based rather than zero-based. TheSimpleDateFormatconstructor accepts the modifiedDateFormatSymbolsobject as an argument. Here is the source code:Date today; String result; SimpleDateFormat formatter; DateFormatSymbols symbols; String[] defaultDays; String[] modifiedDays; symbols = new DateFormatSymbols(new Locale("en","US")); 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); modifiedDays = symbols.getShortWeekdays(); for (int i = 0; i < modifiedDays.length; i++) { System.out.print(modifiedDays[i] + " "); } System.out.println(); System.out.println(); formatter = new SimpleDateFormat("E", symbols); today = new Date(); result = formatter.format(today); System.out.println(result);The preceding code generates this output:
Sun Mon Tue Wed Thu Fri Sat SUN MON TUE WED THU FRI SAT WED
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