NameLister.java Source code

Introduction

Here is the source code for NameLister.java

Source

/*
<PHONEBOOK>
<PERSON>
 <NAME>Joe Wang</NAME>
 <EMAIL>joe@yourserver.com</EMAIL>
 <TELEPHONE>202-999-9999</TELEPHONE>
 <WEB>www.java2s.com</WEB>
</PERSON>
<PERSON>
 <NAME>Karol</name>
 <EMAIL>karol@yourserver.com</EMAIL>
 <TELEPHONE>306-999-9999</TELEPHONE>
 <WEB>www.java2s.com</WEB>
</PERSON>
<PERSON>
 <NAME>Green</NAME>
 <EMAIL>green@yourserver.com</EMAIL>
 <TELEPHONE>202-414-9999</TELEPHONE>
 <WEB>www.java2s.com</WEB>
</PERSON>
</PHONEBOOK>
    
*/

import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

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

public class NameLister {

    public static void main(String args[]) {

        if (args.length != 1) {
            System.err.println("Usage: java NameLister xmlfile.xml");
            System.exit(-1);
        }

        try {

            SAXParserFactory factory = SAXParserFactory.newInstance();
            SAXParser saxParser = factory.newSAXParser();

            DefaultHandler handler = new DefaultHandler() {
                boolean name = false;

                public void startElement(String uri, String localName, String qName, Attributes attributes)
                        throws SAXException {
                    if (qName.equalsIgnoreCase("NAME")) {
                        name = true;
                    }
                }

                public void characters(char ch[], int start, int length) throws SAXException {
                    if (name) {
                        System.out.println("Name: " + new String(ch, start, length));
                        name = false;
                    }
                }
            };

            saxParser.parse(args[0], handler);

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}