Xml parsing, one works, one does not?

Question

I am using the xerces parser to validate a xml against a schema. it works fine if i just specified the location of the xml file. however, if i converted the xml file into byte[], it does not work.
something i did not do right?
thanks.
//works
myParser.parse("C://test.xml");
//does not work, xml_data is the byte[] of test.xml
ByteArrayInputStream bais = new ByteArrayInputStream (xml_data);
myParser.parse(new InputSource(bais));
errors:
[warning] org.xml.sax.SAXParseException: schema_reference.4: Failed to read schema document 'stuff.xsd', because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not <xsd:schema>.
[error] org.xml.sax.SAXParseException: cvc-elt.1: Cannot find the declaration of element 'ElectronicPayment'.
cvc-elt.1: Cannot find the declaration of element 'Person'.

Answer 1

You have:
ByteArrayInputStream bais = new ByteArrayInputStream (xml_data);
myParser.parse(new InputSource(bais));
ERROR is: xml_data is a string, not bytes
so: try
ByteArrayInputStream bais = new ByteArrayInputStream (xml_data.getBytes());
myParser.parse(new InputSource(bais));