Parse XML document file with XML Stream Reader in Java

//from  www  .j  a  v a 2  s  .  c o m
import java.io.FileInputStream;
import java.io.InputStream;

import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamConstants;
import javax.xml.stream.XMLStreamReader;

public class Main{
   public static void main(String[] args) throws Exception{
      InputStream in = new FileInputStream("a.xml");
      XMLInputFactory factory = XMLInputFactory.newInstance();
      XMLStreamReader parser = factory.createXMLStreamReader(in);
      while (parser.hasNext()){
         int event = parser.next();
         if (event == XMLStreamConstants.START_ELEMENT){
            if (parser.getLocalName().equals("name")){
               String href = parser.getAttributeValue(null, "href");
               if (href != null)
                  System.out.println(href);               
            }
         }
      }
   }
}