import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
import org.jdom.*;
import org.jdom.output.XMLOutputter;
import java.io.*;
import java.util.*;
import java.math.BigInteger;



public class XmlCreate {
//källa :::   http://www.cafeconleche.org/books/xmljava/chapters/
//själva documentet!!	
  Document doc;
   
   public XmlCreate(String filen){
        //skapa xml koden
	createXMLCode();
      try{
	 
	 FileWriter out = new FileWriter(filen);
	 XMLOutputter fmt = new XMLOutputter("  ",true);
	 DocType docType = new DocType("valformad");
	 docType.setSystemID("valformad.dtd");
	 doc.setDocType(docType);
	 fmt.output(doc, out);
      }catch(IOException ioe){
	 System.out.println("filen går ej att sparas till!");
      }catch (Exception e) {
	 e.printStackTrace();
      }
      
   }

   private void createXMLCode(){
	   //alla element!!
      Element bilar = new Element("bilar");
      doc = new Document(bilar);
      Element header = new Element("header");
      bilar.addContent(header);
      Element info = new Element("information");
      header.addContent(info);
      Element namn = new Element("namn");
      Element artal = new Element("artal");
      Element antmil = new Element("antmil");
      Element regnr = new Element("regnr");
      namn.setText("Volvo 240");
      artal.setText("1988");
      antmil.setText("15000");
      regnr.setText("LLA624");
      info.addContent(namn);
      info.addContent(artal);
      info.addContent(antmil);
      info.addContent(regnr);
}

   
   private void saveElement(FileWriter out, Element elem){
      try{
	 out.write(elem.getText()+"\n");
	 out.write(elem.getContent()+"\n");
	 List children = elem.getChildren();
	 
	 for (int i=0;i<children.size();i++){
		//anropar sig själv = rekursion!!
		saveElement(out, (Element)children.get(i));
	 }
      }catch(IOException ioe){
	 System.out.println("filen kan vara skrivskyddad");
      }
   }

   public static void main(String[] args) {
      if (args.length==1){
	 new XmlCreate(args[0]);
      }else System.out.println("du har glömt en xml fil som arg");
   }
}