How to initialize Gregorian calendar with date as YYYY-MM-DD format?

Question

I have a class which contains a variable

private GregorianCalendar cal;

Now I want to initialize it with a date in yyyy-mm-dd

Answer 1

You can try to use SimpleDateFormat for example :

GregorianCalendar cal = new GregorianCalendar();
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
format.setCalendar(cal);
String result = format.format(cal.getTime());
System.out.println(result);//today is 2017-05-25

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To convert String to GregorianCalendar :

SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'hh:mm:ssX");
Date date = format.parse("2017-05-25T14:36:52+03:00");
GregorianCalendar cal2 = new GregorianCalendar();
cal2.setTime(date);