I am trying to read the Xml Format in salesforce  by doing this

bodyxml ='<?xml version="1.0"?><Data><Result>True</Result><Password>hello</Password></Data>';

But what i am unable to do is how to get it iterated , in XMLStreamReader Class , I have been through the example below but it iterates on the class and i m not able to understand how is it doing with the Class "Book" as shown below ...

What need is to learn how Iterate through the string as defined above ..... In an XMLStreamReader Class so i can see step by step working in debug . The Code given as help by salesforce is given below . Pls have look ......

I hope i have desbribed it right ....

public class XmlStreamReaderDemo {

   // Create a class Book for processing
   public class Book 
   {
     String name;
     String author;
   }

   public Book[] parseBooks(XmlStreamReader reader) 
   {
     Book[] books = new Book[0];
     while(reader.hasNext()) {
         //  Start at the beginning of the book and make sure that it is a book
         if (reader.getEventType() == XmlTag.START_ELEMENT) {
            if ('Book' == reader.getLocalName()) {
            //  Pass the book to the parseBook method (below) 
                Book book = parseBook(reader);
                books.add(book);
            }
         }
        reader.next();
     }
    return books;
   }

   // Parse through the XML, determine the author and the characters
   Book parseBook(XmlStreamReader reader) 
   {
     Book book = new Book();
     book.author = reader.getAttributeValue(null, 'author');
     while(reader.hasNext()) {
        if (reader.getEventType() == XmlTag.END_ELEMENT) {
           break;
        } else if (reader.getEventType() == XmlTag.CHARACTERS) {
           book.name = reader.getText();
        }
        reader.next();
     }
     return book;
   }
}

There is one more problem with this code that it gets saved for the first time but after some changes of like writing a simple debug it starts giving an error ...

Error: Save error: Method does not exist or incorrect signature: [XMLStreamReader].getLocalName()

Document Dom is one method i want to understand  XMLstreamReader

Thank you