I'm trying to bind an xml file(as a `byte[]`) to a java object. This is my code-

```
public voidinputConfigXML(String xmlfile, byte[] xmlData) {
    IBindingFactory bFact = BindingDirectory.getFactory(GroupsDTO.class);
                IUnmarshallingContext uctx = bFact.createUnmarshallingContext();
                groups = (GroupsDTO) uctx.unmarshalDocument(new ByteArrayInputStream(xmlData), "UTF8");
}

```

The `unmarshalDocument()` is giving me this exception. What do i do?

**FYI: Running as JUnit test case**

The following is the stacktrace -

```
    Error parsing document (line 1, col 1)
    org.xmlpull.v1.XmlPullParserException: only whitespace content allowed before start tag and not \u0 (position: START_DOCUMENT seen \u0... @1:1) 
        at org.xmlpull.mxp1.MXParser.parseProlog(MXParser.java:1519)
        at org.xmlpull.mxp1.MXParser.nextImpl(MXParser.java:1395)
        at org.xmlpull.mxp1.MXParser.next(MXParser.java:1093)
        at org.jibx.runtime.impl.XMLPullReaderFactory$XMLPullReader.next(XMLPullReaderFactory.java:291)
        at org.jibx.runtime.impl.UnmarshallingContext.toStart(UnmarshallingContext.java:451)
        at org.jibx.runtime.impl.UnmarshallingContext.unmarshalElement(UnmarshallingContext.java:2755)
        at org.jibx.runtime.impl.UnmarshallingContext.unmarshalDocument(UnmarshallingContext.java:2905)
        at abc.dra.DRAAPI.inputConfigXML(DRAAPI.java:31)
        at abc.dra.XMLToObject_Test.test(XMLToObject_Test.java:34)
        [...]

```

This is my code that forms byte[]-

```
void test() {
String xmlfile = "output.xml"
File file = new File(xmlfile);
byte[] xmlData = new byte[(int) file.length()];
groups = dra.inputConfigXML(xmlfile, xmlData);
}

```