//Code to demonstrate the parsing of XML via DOM method
import org.w3c.dom.Attr;
import org.w3c.dom.Document;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.apache.xerces.parsers.*;

import java.io.*;


public class PrintUsingDOM
{
    DOMParser myDOMParser = null;
    String xmlFile;
    Document doc;
	 Document otherdoc;
    
    public PrintUsingDOM(String fileName)
    {
        xmlFile = fileName;
        
    }
    
    public void print()
    {
        try
        {
			  myDOMParser = new DOMParser();
			  myDOMParser.parse(xmlFile);
			  doc = myDOMParser.getDocument();
           walk(doc);
        }   
        catch(Exception e)
        {
            System.out.println("Errors " + e);
            
        }

    }
    
    //walk the DOM tree and print as you go
    private void walk(Node node)
    {
        int type = node.getNodeType();
        switch(type)
        {
            case Node.DOCUMENT_NODE:
            {
              System.out.println("<?xml version=\"1.0\" encoding=\""+
                                "UTF-8" + "\"?>");  
              break;                  
            }//end of document
            case Node.ELEMENT_NODE:
            {
                System.out.print('<' + node.getNodeName() );
                NamedNodeMap nnm = node.getAttributes();
                if(nnm != null )
                {
                    int len = nnm.getLength() ;
                    Attr attr;
                    for ( int i = 0; i < len; i++ )
                    {
                        attr = (Attr)nnm.item(i);
                        System.out.print(' ' 
                             + attr.getNodeName()
                             + "=\""
                             + attr.getNodeValue()
                             +  '"' );
                    }
                }
                System.out.print('>');
                
                break;
                
            }//end of element
            case Node.ENTITY_REFERENCE_NODE:
            {
               
               System.out.print('&' + node.getNodeName() + ';' );
               break;
                
            }//end of entity
            case Node.CDATA_SECTION_NODE:
            {
                    System.out.print( "<![CDATA[" 
                            + node.getNodeValue()
                            + "]]>" );
                     break;       
                
            }
            case Node.TEXT_NODE:
            {
                System.out.print(node.getNodeValue());
                break;
            }
            case Node.PROCESSING_INSTRUCTION_NODE:
            {
                System.out.print("<?" 
                    + node.getNodeName() ) ;
                String data = node.getNodeValue();
                if ( data != null && data.length() > 0 ) {
                    System.out.print(' ');
                    System.out.print(data);
                }
                System.out.println("?>");
                break;

             }
        }//end of switch
        
              
        //recurse
        for(Node child = node.getFirstChild(); child != null; child = child.getNextSibling())
        {
            walk(child);
        }
        
        
        //without this we miss the ending tags
        if ( type == Node.ELEMENT_NODE )
        {
            System.out.print("</" + node.getNodeName() + ">");
        }

        
    }//end of walk
    
    public static void main(String args[])
    {
                
        String xmlFileName="";
        if(args.length == 0)
        {
            //Check to ensure user XML file name to parse  
            System.out.println("Usage::java PrintUsingDOM path/xmlFilename");
            System.exit(0);
        }
        else
        {
            xmlFileName = args[0];
        }

        PrintUsingDOM pud = new PrintUsingDOM(xmlFileName);
        pud.print();
		  System.out.println("");
        
    }//end of main

}//end of DOM