Cannot find the declaration of element 'tns:MetricConfiguration'

Hi,
I am new to XML world. I am trying to validate one xml using xsd. xml and xsd both are in seperate jars but in classpath

Here is the snippet of the xsd,xml and code

XSD
<?xml version="1.0" encoding="UTF-8" ?>
- <schema xmlns="http://www.w3.org/2001/XMLSchema" xmlns:tns="http://www.metrics.org/MetricsConfiguration" targetNamespace="http://www.metrics.org/MetricsConfiguration" elementFormDefault="qualified">
......

XML
<?xml version="1.0" encoding="UTF-8"?>
<tns:MetricConfiguration xmlns:tns="http://www.metrics.org/MetricsConfiguration" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.metrics.org/MetricsConfiguration config/schema/MetricsConfiguration.xsd">
<tns:Metrics>......

public static Document buildHdomDoc() {
SAXBuilder builder = new SAXBuilder();

SAXParser parser = new SAXParser();
Document doc = null;

try 
{
parser.setFeature("http://xml.org/sax/features/validation",true);
parser.setFeature("http://apache.org/xml/features/validation/schema",true);
parser.setFeature("http://xml.org/sax/features/namespaces",true);
parser.setFeature("http://apache.org/xml/features/validation/schema-full-checking", true);
parser.setProperty("http://apache.org/xml/properties/schema/external-schemaLocation","http://www.w3.org/2001/XMLSchema  config/schema/MetricsConfiguration.xsd");
//parser.setProperty("http://apache.org/xml/properties/schema/external-schemaLocation",urlschema.toURI());
URL url=temp.class.getClassLoader().getResource("config/MetricsConfiguration.xml");
System.out.println("-------------------------------------------------------url="+url.getPath());
parser.parse(new InputSource(url.openStream()));
doc = builder.build(url);

}
catch (Throwable e) {
// TODO Auto-generated catch block
e.printStackTrace();
System.out.println(e.getMessage());
} 
return doc;
}
}

[ December 11, 2008: Message edited by: Martijn Verburg ]

request to please respond to this

Originally posted by Kartik Patel:
request to please respond to this

Read this FAQ, please.

I think you'd get a lot better response, if you posted your question in "XML and Related Technologies"

I agree, so I will move this thread.

If I'm not mistaken, this part of the schema declaration in your XML document:

/MetricsConfiguration.xsd

says the schema will be found in the root of the file system where the XML document is located. If you gave the parser something with a URL, then it would be able to look there. But if you gave the parser an InputStream, it wouldn't know where to look for the schema.

However it appears the schema isn't in the "root" of the jar file where the XML document is, but it's in some other jar file. So you need to attach an EntityResolver to the parser which provides the schema as a Source (probably a StreamSource) when the parser tries to resolve its URL.