xml and xsd

<or:AddMACRequest
xmlns="urn:uk.org.telcob2b/tML/BT-Order-v15-0"
xmlns:or="urn:com.openreach.Fulfilment2-v15-0"


xmlns:utcc="urn:uk.org.telcob2b/tML/ukt-CommonComponents-v15-0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="urn:com.openreach.Fulfilment2-v15-0 ../../Schemas/Application/Fulfilment2-v15-0.xsd
urn:uk.org.telcob2b/tML/ukt-CommonComponents-v15-0 ../../Schemas/Application/ukt-CommonComponents-v15-0.xsd
urn:uk.org.telcob2b/tML/BT-Order-v15-0 ../../Schemas/telcoB2Bdoc/BT-Order-v15-0.xsd">


<Order>
<BuyersID>50007812</BuyersID>
<utcc:IssueDateTime>2005-03-09T17:05:59</utcc:IssueDateTime>
<utcc:BuyerParty>
<utcc:Party>
<utcc:PartyIdentification>
<utcc:ID identificationSchemeName="DUNS">131620343</utcc:ID>
</utcc:PartyIdentification>
<utcc:Contact>
<utcc:Name>Mrs Jo Bloggs</utcc:Name>
<utcc:Telephone>01473614235</utcc:Telephone>
<utcc:ElectronicMail>[email protected]</utcc:ElectronicMail>
</utcc:Contact>
</utcc:Party>

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how to use xmlns? i have all xsds but i don't know how to use.i want to use in my local system and validate xml..kindly reply soon.if possible pls post a java program to validate it..
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i am using program


import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import java.io.*;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;


public class Test {

public static void main(String[] args) {
try {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setValidating(true);
factory.setNamespaceAware(true);
factory.setAttribute("http://java.sun.com/xml/jaxp/properties/schemaLanguage", "http://www.w3.org/2001/XMLSchema");

DocumentBuilder builder = factory.newDocumentBuilder();
builder.setErrorHandler(new SimpleErrorHandler());
builder.parse(new InputSource("AddMACRequest - FTTP.xml"));
} catch (ParserConfigurationException e) {
e.printStackTrace();
} catch (SAXException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
=================
error:-cvc-elt.1: Cannot find the declaration of element 'or:AddMACRequest'.