Java JAXB Marshaller convert Object to XML

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.math.BigInteger;
import java.util.List;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;

public class Main {
    public static void main(String[] args) {
        if (args.length != 2) {
            System.out.println("Usage: Main <xmlfile> <context>");
            System.exit(1);// w  w w  .  j  a  v a2  s . co  m
        }
        MarshalLanguages app = new MarshalLanguages();
        try {
            app.run(args[0], args[1]);
        } catch (JAXBException ex) {
            ex.printStackTrace();
        } catch (FileNotFoundException ex) {
            ex.printStackTrace();
        }
    }
    
    public void run(String xmlFile, String context) throws JAXBException, FileNotFoundException {
        Languages languages = new Languages();
        List<Language> languageList = languages.getLanguage();
        
        Language p = new Language();
        p.setId(BigInteger.valueOf(1));
        p.setName("CSS");
        p.setFeature("Tester");
        
        languageList.add(p);
        
        JAXBContext jc = JAXBContext.newInstance(context);
        Marshaller m = jc.createMarshaller();
        m.marshal(languages, new FileOutputStream(xmlFile));
    }
    
}

import java.math.BigInteger;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlType;
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "Language", propOrder = {
    "name",/*from  www .  j  av  a  2  s  .co  m*/
    "feature"
})
public class Language {

    @XmlElement(required = true)
    protected String name;
    @XmlElement(required = true)
    protected String feature;
    @XmlAttribute(name = "id", required = true)
    protected BigInteger id;

    public String getName() {
        return name;
    }
    public void setName(String value) {
        this.name = value;
    }
    public String getFeature() {
        return feature;
    }
    public void setFeature(String value) {
        this.feature = value;
    }
    public BigInteger getId() {
        return id;
    }
    public void setId(BigInteger value) {
        this.id = value;
    }

}

import java.util.ArrayList;
import java.util.List;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlType;

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "", propOrder = {
    "language"// ww w. j  av a 2  s.c  om
})
@XmlRootElement(name = "languages")
public class Languages {

    @XmlElement(required = true)
    protected List<Language> language;
    public List<Language> getLanguage() {
        if (language == null) {
            language = new ArrayList<Language>();
        }
        return this.language;
    }

}

import javax.xml.bind.annotation.XmlRegistry;
@XmlRegistry//from   w ww  .ja  v a 2s .  c  o  m
public class ObjectFactory {

    public ObjectFactory() {
    }
    public Languages createLanguages() {
        return new Languages();
    }
    public Language createLanguage() {
        return new Language();
    }

}