I'm trying to marshal an object that has an Object as one of its fields.

@XmlRootElement
public class TaskInstance implements Serializable {
   ...
   private Object dataObject;
   ...
}

The dataObject can be one of many different unknown types, so specifying each somewhere is not only impractical but impossible. When I try to marshal the object, it says the class is not known to the context. 

MockProcessData mpd = new MockProcessData();
TaskInstance ti = new TaskInstance();
ti.setDataObject(mpd);

String ti_m = JAXBMarshall.marshall(ti);

"MockProcessData nor any of its super class is known to this context." is what I get.

Is there any way around this error?

java jaxb
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