@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "ResponseData", propOrder = {
    "data"
})
public class ResponseData {
 
	protected Object data;
 
    /**
     * Gets the value of the data property.
     * 
     * @return
     *     possible object is
     *     {@link Object }
     *     
     */
	public Object getData() {
 	      return data;
  	}
 
    /**
     * Sets the value of the data property.
     * 
     * @param value
     *     allowed object is
     *     {@link Object }
     *     
     */
    public void setData(Object value) {
        this.data = value;
    }

...
ResponseData responseData=new ResponseData();		
Test test=new Test();
test.setText("test");
responseData.setData(test);
response.setResponseData(responseData);
...

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "Test", propOrder = {
    "test"
})
public class Test{
        protected String text;

	public String getText() {
		return text;
	}

	public void setText(String text) {
		this.text = text;
	}
}