how to get week day for given date for using Calendar in android studio -

here code:

// date birthday;             gregoriancalendar birthday = new gregoriancalendar();              birthday.set(year_int,mo,da,0,0,0);             int weekday = birthday.get(gregoriancalendar.day_of_week);             string weekday = string.valueof(weekday -1);             weekday = weekday.replace("0","sunday.");             weekday = weekday.replace("1","monday.");             weekday = weekday.replace("2","tuesday.");             weekday = weekday.replace("3","wednesday.");             weekday = weekday.replace("4","thursday.");             weekday = weekday.replace("5","friday.");             weekday = weekday.replace("6","saturday."); 

what's wrong here? please me.

use joda-time instead.

datetime birthday = new datetime(year, mo,day, 0, 0, 0); datetimeformatter format = datetimeformat.forpattern("eeee"); string weekday = birthday.tostring(format); 

will return day of week.

if want use calendar:

simpledateformat sdf = new simpledateformat("eeee");     calendar calendar = new gregoriancalendar(year, mo,day, 0, 0, 0);    string weekday =  sdf.format(calendar.gettime());