Need help while using mapping JAXB generated class to custom classes

[Sim Kim]

Hi,

I have some old classes (which I cannot change) . While JAXB generates it own classes , I need to populate my old classes with the values of JAXB generated classes . Where do I do that ?

I have the mapping code ready :

 
public void mapValues(MyCreditCard myCC) {
      JAXBCreditCard cc = new JAXBCreditCard();
      cc.setCardName(myCC.getName());   
      .....
}
 
    

I want to know where should I call this method in my code so that the values from JAXB classes get filled in my custom class and vice versa ?
Do I need to use marshaller for this ?