Sax Example

SaxExample.java

import java.io.*;

import org.xml.sax.*;
import org.xml.sax.helpers.*;
import org.apache.xerces.parsers.SAXParser;

public class Flour extends DefaultHandler {
    float amount = 0;

    public void startElement(String namespaceURI, String localName,
                             String qName, Attributes atts) {
        if (namespaceURI.equals("http://recipes.org") 
&& localName.equals("ingredient")) {
            String n = atts.getValue("", "name");
            if (n.equals("flour")) {
                String a = atts.getValue("", "amount"); // assume 'amount' exists
                amount = amount + Float.valueOf(a).floatValue();
            }
        }
    }


    public static void main(String[] args) {
        Flour f = new Flour();
        SAXParser p = new SAXParser();
        p.setContentHandler(f);
        try {
            p.parse(args[0]);
        } catch (Exception e) {
            e.printStackTrace();
        }
        System.out.println(f.amount);

    }

}