How get only year with type XMLGregorianCalendar

i have a XML Jaxb class to set with XMLGregorianCalendar type. But we are supposed to set only year in this attribute.

XMLGregorianCalendar xmlCal = DatatypeFactory.newInstance().newXMLGregorianCalendar(new 
GregorianCalendar());
xmlCal.setYear(2021);
xmlObject.setBuiltYear(xmlCal); 
// xmlCal.getYear() will give me year but its type int , so setter method not accepting it. If 
has to be of type XMLGregorianCalendar  only with year.

If i set it like above its giving 2021-09-23T10:19:38.346-04:00 but i need only year with type XMLGregorianCalendar . how we can do that ?

Solution

Use XMLGregorianCalendar#clear before setting the year.

Demo:

import java.util.GregorianCalendar;

import javax.xml.datatype.DatatypeConfigurationException;
import javax.xml.datatype.DatatypeFactory;
import javax.xml.datatype.XMLGregorianCalendar;

public class Main {
    public static void main(String[] args) throws DatatypeConfigurationException {
        XMLGregorianCalendar xmlCal = DatatypeFactory.newInstance().newXMLGregorianCalendar(new GregorianCalendar());
        xmlCal.clear();
        xmlCal.setYear(2021);
        System.out.println(xmlCal);
    }
}

Output:

ONLINE DEMO