sss

package n12;

import java.io.*;

import javax.xml.parsers.*;

import org.xml.sax.*;
import org.xml.sax.helpers.DefaultHandler;

import javax.xml.transform.Source;
import javax.xml.transform.stream.StreamSource;
import javax.xml.validation.SchemaFactory;


public class ue61 {

    public static void main(String[] args) throws SAXException {

        SAXParserFactory factory = SAXParserFactory.newInstance();
        factory.setValidating(false); //not checking a DTD

        SchemaFactory schemaFactory = SchemaFactory.newInstance("http://www.w3.org/2001/XMLSchema");

        factory.setSchema(schemaFactory.newSchema(new Source[] {new StreamSource("ue61.xsd")}));
        SAXParser saxParser;
        try {
            saxParser = factory.newSAXParser();
            // parse …
            File file = new File("ue61.xml");
            saxParser.parse(file, new PrintElementsHandler());
        } catch (ParserConfigurationException e1) {
            System.out.println("ParserConfigurationException: "+e1.getMessage());
        } catch (SAXException e1) {
            System.out.println("SAXException: "+e1.getMessage());
        } catch (IOException e) {
            System.out.println("IOException: "+e.getMessage());
        }
    }
}

class PrintElementsHandler extends DefaultHandler {
    int biggestNumber = 0;

    StringBuffer blanks = new StringBuffer(); // leading blanks

    int depth = 0; // depth of node

    public void startDocument() throws SAXException {
        System.out.println("start document -----------------------------");
    }

    /*  namespaceURI: Namensraum-Bezeichner oder null
    localName: lokaler Elementname ohne Präfix
    qName: Elementname mit Namensraumpräfix (falls vorhanden)
    atts: Menge aller Attribute des Elements (Start-Tags)*/
    public void startElement(String uri, String localName, String qName,
            Attributes attributes) throws SAXException {
        blanks.append("   "); // add 3 blanks
        depth++; // increase depth
        System.out.print(blanks.toString() + depth + " - " + qName + ": ");
        for (int i = 0; i < attributes.getLength(); i++) {
            System.out.print(attributes.getQName(i) + " = "
                    + attributes.getValue(i) + "  ");
        }
        System.out.println();
    }

    public void characters(char[] ch, int start, int length)
            throws SAXException {
        String s = new String(ch, start, length);
        System.out.println(blanks.toString() + "   " + (depth + 1) + " - " + s);
        if(s.matches("[0-9]+")) // regex string check if number
        {
            int temp = Integer.parseInt(s);
            if(biggestNumber < temp)
            {
                biggestNumber = temp;
            }
        }
    }

    /*  namespaceURI: Namensraum-Bezeichner oder null
        localName: lokaler Elementname ohne Präfix
        qName: Elementname mit Präfix*/
    public void endElement(String uri, String localName, String qName)
            throws SAXException {
        blanks.delete(0, 3); // delete 3 blanks
        depth--; // decrease depth
    }

    public void endDocument() throws SAXException {
        System.out.println("Biggest Number in all value-Elements: "+biggestNumber);
        System.out.println("end document ------------------------------");
    }


    //
    // ErrorHandler methods
    //

    /** Warning. */
    @Override
    public void warning(SAXParseException ex) throws SAXException {
        printError("Warning", ex);
    } // warning(SAXParseException)

    /** Error. */
    @Override
    public void error(SAXParseException ex) throws SAXException {
        printError("Error", ex);
    } // error(SAXParseException)

    /** Fatal error. */
    @Override
    public void fatalError(SAXParseException ex) throws SAXException {
        printError("Fatal Error", ex);
        // throw ex;
    } // fatalError(SAXParseException)

    //
    // Protected methods
    //

    /** Prints the error message. */
    protected void printError(String type, SAXParseException ex) {

        System.err.print("[");
        System.err.print(type);
        System.err.print("] ");
        if (ex == null) {
            System.err.println("!!!");
        }
        String systemId = ex.getSystemId();
        if (systemId != null) {
            int index = systemId.lastIndexOf('/');
            if (index != -1)
                systemId = systemId.substring(index + 1);
            System.err.print(systemId);
        }
        System.err.print(':');
        System.err.print(ex.getLineNumber());
        System.err.print(':');
        System.err.print(ex.getColumnNumber());
        System.err.print(": ");
        System.err.print(ex.getMessage());
        System.err.println();
        System.err.flush();

    } // printError(String,SAXParseException)


}