SAX2 Event Reporter

import org.xml.sax.*;
import org.xml.sax.helpers.*;
import java.io.*;

public class EventReporter implements ContentHandler {

  public void setDocumentLocator(Locator locator) {
    System.out.println("setDocumentLocator(" + locator + ")");
  }

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

  public void endDocument() throws SAXException {
    System.out.println("endDocument()");
  }

  public void startElement(String namespaceURI, String localName, 
   String qualifiedName, Attributes atts)
   throws SAXException {
    namespaceURI = '"' + namespaceURI + '"';
    localName = '"' + localName + '"';
    qualifiedName = '"' + qualifiedName + '"';
    String attributeString = "{";
    for (int i = 0; i < atts.getLength(); i++) {
      attributeString += atts.getQName(i) + "=\"" 
       + atts.getValue(i) + "\"";
      if (i != atts.getLength()-1) attributeString += ", ";
    }
    attributeString += "}";
    System.out.println("startElement(" + namespaceURI + ", " 
     + localName + ", " + qualifiedName + ", " + attributeString + ")");
  }

  public void endElement(String namespaceURI, String localName, 
   String qualifiedName)
   throws SAXException {
    namespaceURI = '"' + namespaceURI + '"';
    localName = '"' + localName + '"';
    qualifiedName = '"' + qualifiedName + '"';
    System.out.println("endElement(" + namespaceURI + ", " 
     + localName + ", " + qualifiedName + ")");
  }

  public void characters(char[] text, int start, int length)
   throws SAXException {
    String textString = "[" + new String(text) + "]";
    System.out.println("characters(" + textString + ", " 
     + start + ", " +  length + ")");
  }

  public void ignorableWhitespace(char[] text, int start, int length)
   throws SAXException {
    System.out.println("ignorableWhitespace()");
  }

  public void processingInstruction(String target, String data)
   throws SAXException {
    System.out.println("processingInstruction(" + target + ", " 
     + data + ")");
  }

  public void startPrefixMapping(String prefix, String uri)
   throws SAXException {
    System.out.println("startPrefixMapping(\"" + prefix + "\", \"" 
     + uri + "\")");
  }

  public void endPrefixMapping(String prefix) throws SAXException {
    System.out.println("endPrefixMapping(\"" + prefix + "\")");
  }

  public void skippedEntity(String name) throws SAXException {
    System.out.println("skippedEntity(" + name + ")");
  }

  // Could easily have put main() method in a separate class
  public static void main(String[] args) {

    XMLReader parser;
    try {
     parser = XMLReaderFactory.createXMLReader();
    }
    catch (Exception e) {
      // fall back on Xerces parser by name
      try {
        parser = XMLReaderFactory.createXMLReader(
         "org.apache.xerces.parsers.SAXParser");
      }
      catch (Exception ee) {
        System.err.println("Couldn't locate a SAX parser");
        return;
      }
    }


    if (args.length == 0) {
      System.out.println(
       "Usage: java EventReporter URL1 URL2...");
    }

    // Install the content handler
    parser.setContentHandler(new EventReporter());

    // start parsing...
    for (int i = 0; i < args.length; i++) {

      // command line should offer URIs or file names
      try {
        parser.parse(args[i]);
      }
      catch (SAXParseException e) { // well-formedness error
        System.out.println(args[i] + " is not well formed.");
        System.out.println(e.getMessage()
         + " at line " + e.getLineNumber()
         + ", column " + e.getColumnNumber());
      }
      catch (SAXException e) { // some other kind of error
        System.out.println(e.getMessage());
      }
      catch (IOException e) {
        System.out.println("Could not report on " + args[i]
         + " because of the IOException " + e);
      }

    }

  }

}