Invalid set of fields set for XMLGregorianCalendar

Exception in thread "main" java.lang.IllegalStateException: com.sun.org.apache.xerces.internal.jaxp.datatype.XMLGregorianCalendarImpl#getXMLSchemaType() :Invalid set of fields set for XMLGregorianCalendar
 at com.sun.org.apache.xerces.internal.jaxp.datatype.XMLGregorianCalendarImpl.getXMLSchemaType(XMLGregorianCalendarImpl.java:1928)
 at com.sun.org.apache.xerces.internal.jaxp.datatype.XMLGregorianCalendarImpl.toXMLFormat(XMLGregorianCalendarImpl.java:1764)
 at javax.xml.datatype.XMLGregorianCalendar.toString(XMLGregorianCalendar.java:866)

I was getting the above exception when I try to run the following code...

XMLGregorianCalendar tmStamp = new XMLGregorianCalendarImpl();
        tmStamp.setYear(2011);
        tmStamp.setMonth(Calendar.NOVEMBER);
        tmStamp.setDay(30);
        tmStamp.setHour(10);
        tmStamp.setMinute(59); 
        System.out.println(tmStamp.toString());

Solution:
Set the seconds as well

tmStamp.setSeconds(30);

Setting the seconds is mandatory when you set hours and minutes.