How to change date format?

[prachishukla007]

ScrollWheelDatePicker(
theme: FlatDatePickerTheme(
backgroundColor: Colors.white,
overlay: ScrollWheelDatePickerOverlay.holo,
itemTextStyle: defaultItemTextStyle.copyWith(color: Colors.black),
overlayColor: Colors.black,

              overAndUnderCenterOpacity: 0.2,
            ),
          ),

Expected format:

Month | Date | Year

Current format:

Date | Month | Year

Unable to change. Any solution?