import javax.xml.parsers.SAXParserFactory;
import javax.xml.parsers.SAXParser;
import org.xml.sax.*;
import org.xml.sax.helpers.*;
public class ProductsSchemaValidation extends DefaultHandler
{
	public static void main(String[] args) throws Exception
	{
		System.out.println("Start of Products...");
		ProductsSchemaValidation readerObj = new ProductsSchemaValidation();
		readerObj.read(args[0], args[1]);
	}

	public void read(String xmlFileName, String xsdSchemaName) throws Exception
	{
		String validationFeature = "http://xml.org/sax/features/validation";
		String schemaFeature = "http://apache.org/xml/features/validation/schema";
		XMLReader reader =
		  XMLReaderFactory.createXMLReader("org.apache.xerces.parsers.SAXParser");
		reader.setProperty
		 ("http://apache.org/xml/properties/schema/external-noNamespaceSchemaLocation",
		  xsdSchemaName);
		reader.setFeature(validationFeature, true);
		reader.setFeature(schemaFeature, true);
		reader.setContentHandler(this);
		reader.setErrorHandler(this);
		reader.parse(xmlFileName);
	}

	public void startDocument() throws SAXException
	{
		System.out.println("Start of the document");
	}

	public void endDocument() throws SAXException
	{
		System.out.println("End of the document");
	}

	public void startElement(String uri, String name, String qName, Attributes atts)
	{
		if ("".equals(uri))
			System.out.println("Start element: " + qName);
		else
			System.out.println("Start element: {" + uri + "}" + name);
	}

	public void endElement(String uri, String name, String qName)
	{
		if ("".equals(uri))
			System.out.println("End element: " + qName);
		else
			System.out.println("End element:   {" + uri + "}" + name);
	}

	public void warning(SAXParseException e) throws SAXException
	{
		System.out.println("Warning: ");
		displayErrorInfo(e);
	}

	public void error(SAXParseException e) throws SAXException
	{
		System.out.println("Error: ");
		displayErrorInfo(e);
	}

	public void fatalError(SAXParseException e) throws SAXException
	{
		System.out.println("Fatal error: ");
		displayErrorInfo(e);
	}

	private void displayErrorInfo(SAXParseException e)
	{
		System.out.println("   Public ID: " + e.getPublicId());
		System.out.println("   System ID: " + e.getSystemId());
		System.out.println("   Line number: " + e.getLineNumber());
		System.out.println("   Column number: " + e.getColumnNumber());
		System.out.println("   Message: " + e.getMessage());
	}
}