netbeans - How to read elements of arraylist of a class defined in another class in java? -

i working on project college. have 2 classes "email_info" , "contacts". in class "contacts", made arraylist of type "email_info". class contacts used add data xml file("contacts.xml" ), , uses variables of email_info class. problem whenever try access elements of "contacts.xml" file after unmarshalling file, address "mailwidgetaa.email_info@12d3a4e9" instead of actual data( should like, e_id- abc@gmail.com, pass- password). how do actual data ?

below full code::

 package mailwidgetaa; @xmlrootelement public class contacts {  list<email_info> contaclist = new arraylist<email_info>();  @xmlelement public list<email_info> getcontaclist() {     return contaclist; }  public void setcontaclist(list<email_info> contaclist) {     this.contaclist = contaclist; } }   @xmlrootelement class email_info {  string e_id; string u_name; string pass;  @xmlelement public string gete_id() {     return e_id; }  public void sete_id(string e_id) {     this.e_id = e_id; }  @xmlelement public string getu_name() {     return u_name; }  public void setu_name(string u_name) {     this.u_name = u_name; }  @xmlelement public string getpass() {     return pass; }  public void setpass(string pass) {     this.pass = pass; }  }    public class mailwidgetaa {   public static void main(string[] args) {  contatcs con = new contacts(); con = null;      try {         jaxbcontext jaxbc1 = jaxbcontext.newinstance(contacts.class);         unmarshaller unmarsh = jaxbc1.createunmarshaller();         con = (contacts) unmarsh.unmarshal(new file("contacts.xml"));      } catch (exception e) {         system.out.println("exception " + e.getmessage());     }      email_info ein = new email_info();     ein.sete_id(ui);     ein.setu_name(un);      con.getcontaclist().add(ein);      try {          jaxbcontext jaxbc = jaxbcontext.newinstance(contacts.class);         marshaller marsh = jaxbc.createmarshaller();         marsh.setproperty(marshaller.jaxb_formatted_output, true);         marsh.marshal(con, new file("contacts.xml"));   } catch (jaxbexception e) {         system.out.println("exception" + e.getmessage());     }   }        iterator e= con.contaclist.iterator();         while(e.hasnext()){             system.out.println(e.next());         }    } 

that's because haven't implemented tostring method in email_info class. implement like:

@override public string tostring() {    return "e_id: " + e_id + " u_name: " + u_name + " pass: " + pass; }