I need to validate a xml with XSD in java program .
I am creating a builder as follows

Reader sReader = new StringReader(xmlStr);
SAXBuilder builder
            = new SAXBuilder("org.apache.xerces.parsers.SAXParser", true);
org.jdom.Document document = builder.build(sReader);

how should i specify the XSD file against which we need to validate
Variable xmlStr is my XML message.