How to parse data from localhost xml file in android -

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hi iam trying parse xml file hosted in localhost server. on executing did'nt data. please me if knows.

my code:

package com.example.androidtablayout;  import java.io.ioexception; import java.io.inputstream; import java.net.malformedurlexception; import java.net.url; import java.net.urlconnection;  import javax.xml.parsers.documentbuilder; import javax.xml.parsers.documentbuilderfactory;  import org.w3c.dom.document; import org.w3c.dom.nodelist;  import android.app.activity; import android.os.asynctask; import android.os.bundle;  public class photosactivity extends activity {     public void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.photos_layout);         try {             new photosactivity().start();         } catch (exception e) {             // todo auto-generated catch block             e.printstacktrace();         }     }      private void start() throws exception     {         url url = new url("http://localhost/mini.xml");         urlconnection connection = url.openconnection();          document doc = parsexml(connection.getinputstream());         nodelist descnodes = doc.getelementsbytagname("category");         nodelist descnodes1 = doc.getelementsbytagname("name");         nodelist descnodes2 = doc.getelementsbytagname("price");         nodelist descnodes3 = doc.getelementsbytagname("icon");          for(int i=0; i<descnodes1.getlength();i++)         {             system.out.println(descnodes.item(i).gettextcontent());             system.out.println(descnodes1.item(i).gettextcontent());             system.out.println(descnodes2.item(i).gettextcontent());             system.out.println(descnodes3.item(i).gettextcontent());          }     }      private document parsexml(inputstream stream)     throws exception     {         documentbuilderfactory objdocumentbuilderfactory = null;         documentbuilder objdocumentbuilder = null;         document doc = null;         try         {             objdocumentbuilderfactory = documentbuilderfactory.newinstance();             objdocumentbuilder = objdocumentbuilderfactory.newdocumentbuilder();              doc = objdocumentbuilder.parse(stream);         }         catch(exception ex)         {             throw ex;         }                return doc;     }  }

my localhost xml:

<truck> <truckdata> <id>1</id> <category>small trucks</category> <name>mercedes-benz</name> <price>16,000.00</price> <icon>benz</icon> </truckdata> <truckdata> <id>2</id> <category>box trucks</category> <name>volkswagen lt 46</name> <price>26,000.00</price> <icon>volks</icon> </truckdata> <truckdata> <id>3</id> <category>pickup trucks</category> <name>bmw m3</name> <price>38,000.00</price> <icon>bmw</icon> </truckdata> <truckdata> <id>4</id> <category>row truck</category> <name>chevrolet silverado</name> <price>34,000.00</price> <icon>chev</icon> </truckdata> </truck>


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