Example of Java SAX document parsing.

DefaultHandler.java

import java.util.Hashtable;

import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

/**
 * XML parser for simulation config.
 * @author ryank_000
 *
 */
public class ConfigParser extends DefaultHandler {
  private Hashtable<String, SimComponent> components;
	
	@Override
	public void startDocument() throws SAXException {
		//Create data structure.
		components = new Hashtable<String, SimComponent>();
	}
	
	@Override
	public void startElement(String URI, String localName, String qName, Attributes attr) throws SAXException {
		//Handle elements.
		System.out.println("Start Element: " + localName + " / " + qName);
		//Create components.
		if(qName.matches("component")) {
			String id = attr.getValue("id");
			System.out.println("id: " + id + " URI: " + URI);
		}
		
	}
	
	@Override
	public void endElement(String URI, String localName, String qName) throws SAXException {
		//End of an element.
		System.out.println("End Element: " + localName + " " + qName);
	}
	
	@Override
	public void endDocument() throws SAXException {
		//End of document.
       
    }

}

Parse.java

public class Configuration {
  
	boolean loaded;		// Indicates XML has been correctly loaded.
	
	public void Parse(String name) {
		XMLReader r;
		File f;
		ConfigParser c = new ConfigParser();
		
		//Create File.
		f = new File(name);
		
		//Fetch and configure XML reader.
		try {
			r = SAXParserFactory.newInstance().newSAXParser().getXMLReader();
		} catch (SAXException e) {
			Log.Error("Configurator", e.toString());
			return;
		} catch (ParserConfigurationException e) {
			Log.Error("Configurator", e.toString());
			return;
		}
		
		//Attach XML context handler.
		r.setContentHandler(c);
		
		//Attempt parser operation.
		try {
			r.parse(f.toURI().toURL().toString());
		} catch (MalformedURLException e) {
			Log.Error("Configurator", e.toString());
			return;
		} catch (IOException e) {
			Log.Error("Configurator", e.toString());
			return;
		} catch (SAXException e) {
			Log.Error("Configurator", e.toString());
			return;
		}
		
	}

}