XML parser Jar confusion

I need to know which jar contains the following开发者_JAVA技巧 class

com.ibm.xml.jaxp.datatype.XMLGregorianCalendar

kindly help me

Use the following code snippet:

System.out.println(com.ibm.xml.jaxp.datatype.XMLGregorianCalendar.class.getProtectionDomain().getCodeSource().getLocation());

this jar exists in xml-apis.jar

Are you using Maven ?

mvn dependency:tree

Then in the output look for: com.ibm.