Simple osm parser (using osmosis)

Hi to all of you,

i am new at the whole OSM thing and from Germany. I am a student and 26 years old. At the moment i am writing a programm, that compares gps tracks with the osm data. Therefor i want to extract the nodes, the latitudes and longitudes forum a .osm file which i want to save in a list of “wegpunkt”. The looks like this:

public class Wegpunkt {

    public double x;
    public double y;
    public double altitude;
    public double distance;

    public Wegpunkt(double x1, double y1, double altitude1, double dist1) {
        this.x = x1;
        this.y = y1;
        this.altitude = altitude1;
        this.distance = dist1;
    public Wegpunkt(){
        this.x = 0;
        this.y = 0;
        this.altitude = 0;
        this.distance = 0;
    public double getAbstand(Wegpunkt p) {
        double ergebnis = Math.sqrt((p.x-x)*(p.x-x) + (p.y-y)*(p.y-y));
        double test = p.distance - distance;
        return ergebnis; 
    public double getx(){
        return this.x;
    public String toString(){
        String s = "";
        s+= "x: " + this.x;
        s+= "  y: " + this.y;
        s+= "  hoehe: " + this.altitude;
        s+= "  distance: " + this.distance;
        return s;
    public static void main(String[] args) {
        double a = 1;
        double b = 2;
        double c = 2;
        double d = 2;
        Wegpunkt w = new Wegpunkt(a, b, c, d );

I tried a lot the last 2 days and the result is not that good.

I have two other classes:

package Osmparser;

import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.XMLReaderFactory;

public class Main {
  public static void main(String[] args) {
    try {
      // XMLReader erzeugen
      XMLReader xmlReader = XMLReaderFactory.createXMLReader();
      // Pfad zur XML Datei
      FileReader reader = new FileReader("E:/Uni Hannover/projektarbeit/Eilenriede.osm");
      InputSource inputSource = new InputSource(reader);

      // DTD kann optional übergeben werden
      // inputSource.setSystemId("X:\\personen.dtd");

      // PersonenContentHandler wird übergeben
      xmlReader.setContentHandler(new PersonenContentHandler());

      // Parsen wird gestartet
    } catch (FileNotFoundException e) {
    } catch (IOException e) {
    } catch (SAXException e) {


package Osmparser;
import parser.*;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;

import org.xml.sax.Attributes;
import org.xml.sax.ContentHandler;
import org.xml.sax.Locator;
import org.xml.sax.SAXException;

public class PersonenContentHandler implements ContentHandler {

  private ArrayList<Wegpunkt> alleWegpunkte = new ArrayList<Wegpunkt>();
  private String currentValue;
  private Wegpunkt wegpunkt;

  // Aktuelle Zeichen die gelesen werden, werden in eine Zwischenvariable
  // gespeichert
  public void characters(char[] ch, int start, int length)
      throws SAXException {
    currentValue = new String(ch, start, length);

  // Methode wird aufgerufen wenn der Parser zu einem Start-Tag kommt
  public void startElement(String uri, String localName, String qName,
      Attributes atts) throws SAXException {
    if (localName.equals("node")) {
      System.out.println("anfang erreicht");
      // Neuer Wegpunkt erzeugt
      wegpunkt = new Wegpunkt();

  // Methode wird aufgerufen wenn der Parser zu einem End-Tag kommt
  public void endElement(String uri, String localName, String qName)
      throws SAXException {

    // latitude setzen
      if (localName.equals("lon")) {
        System.out.println("Lon set");
        double d = Double.parseDouble(currentValue);

    // longitutde setzen
    if (localName.equals("lon")) {
        System.out.println("Lon set");
        double d = Double.parseDouble(currentValue);

    // Wegpunkt in Wegpunktliste abspeichern falls Wegpunkt End-Tag erreicht
    // wurde.
    if (localName.equals("node")) {
      System.out.println("ende erreicht");

  public void endDocument() throws SAXException {}
  public void endPrefixMapping(String prefix) throws SAXException {}
  public void ignorableWhitespace(char[] ch, int start, int length)
      throws SAXException {}
  public void processingInstruction(String target, String data)
      throws SAXException {}
  public void setDocumentLocator(Locator locator) {  }
  public void skippedEntity(String name) throws SAXException {}
  public void startDocument() throws SAXException {}
  public void startPrefixMapping(String prefix, String uri)
    throws SAXException {}

The osm i want to parse looks like:

<?xml version="1.0" encoding="UTF-8"?>
<osm version="0.6" generator="CGImap 0.0.2" copyright="OpenStreetMap and contributors" attribution="" license="">
 <bounds minlat="52.3727000" minlon="9.7523000" maxlat="52.3988000" maxlon="9.7913000"/>
 <node id="21306291" lat="52.3734343" lon="9.7892360" user="BurnyB" uid="83876" visible="true" version="7" changeset="7753029" timestamp="2011-04-03T11:38:56Z"/>
 <node id="25753554" lat="52.3820175" lon="9.7661638" user="Langlaeufer" uid="34953" visible="true" version="15" changeset="6542608" timestamp="2010-12-04T19:46:58Z">
  <tag k="highway" v="traffic_signals"/>
  <tag k="TMC:cid_58:tabcd_1:Class" v="Point"/>
  <tag k="TMC:cid_58:tabcd_1:Direction" v="both"/>
  <tag k="TMC:cid_58:tabcd_1:LCLversion" v="9.00"/>
  <tag k="TMC:cid_58:tabcd_1:LocationCode" v="47541"/>
  <tag k="TMC:cid_58:tabcd_1:NextLocationCode" v="47542"/>
  <tag k="TMC:cid_58:tabcd_1:PrevLocationCode" v="47540"/>
 <node id="25753555" lat="52.3783739" lon="9.7682939" user="Langlaeufer" uid="34953" visible="true" version="4" changeset="6542608" timestamp="2010-12-04T19:46:40Z"/>
 <node id="25753557" lat="52.3783062" lon="9.7630994" user="Kurt Krampmeier" uid="41889" visible="true" version="2" changeset="9639237" timestamp="2011-10-23T23:41:57Z"/>
 <node id="25753558" lat="52.3778321" lon="9.7681972" user="Langlaeufer" uid="34953" visible="true" version="6" changeset="6548958" timestamp="2010-12-05T10:57:01Z">
  <tag k="access" v="request"/>
  <tag k="highway" v="traffic_signals"/>
  <tag k="tactile_paving" v="no"/>
  <tag k="traffic_signals:sound" v="no"/>
  <tag k="traffic_signals:vibration" v="no"/>
  <tag k="wheelchair" v="yes"/>
 <node id="25753559" lat="52.3767687" lon="9.7684331" user="Langlaeufer" uid="34953" visible="true" version="3" changeset="6542608" timestamp="2010-12-04T19:46:30Z"/>
 <node id="25753560" lat="52.3779688" lon="9.7689394" user="Langlaeufer" uid="34953" visible="true" version="4" changeset="6550852" timestamp="2010-12-05T13:47:28Z"/>
 <node id="25753561" lat="52.3769012" lon="9.7693910" user="Langlaeufer" uid="34953" visible="true" version="5" changeset="6542608" timestamp="2010-12-04T19:46:33Z">
  <tag k="TMC:cid_58:tabcd_1:Class" v="Point"/>
  <tag k="TMC:cid_58:tabcd_1:Direction" v="negative"/>
  <tag k="TMC:cid_58:tabcd_1:LCLversion" v="9.00"/>
  <tag k="TMC:cid_58:tabcd_1:LocationCode" v="47542"/>
  <tag k="TMC:cid_58:tabcd_1:NextLocationCode" v="47543"/>
  <tag k="TMC:cid_58:tabcd_1:PrevLocationCode" v="47541"/>

Maybe i am totally at the wrong way, because running the do not give a result for the latitude and longitude values.

So, i heard that osmosis is a good tool for osm parsing. Do you say its easier to restart programming using this? and, if so, how do i do that?

Greetings and excuses for the bad english