ArrayList and type the return

Hello
i have a probleme with my class essentielly with my method look my class
import java.util.ArrayList;
import java.util.Iterator;

Code:

---

public class Personne {
        ArrayList persones=new ArrayList<Personne>();
        private long id;
        private String nom="";
        public  long getId(){
                return id;
        }
        public String getNom(){
                return nom;
        }
        public long setId(long id){
                return id=id;
        }
        public String setNom(String nom){
                return nom=nom;
        }
//here the problem the return
        public String getPersone(){
                Iterator iterateur=persones.iterator();
                while(iterateur.hasNext()){
                        long id=((Personne)iterateur.next()).getId();
                        String nom=((Personne)iterateur.next()).getNom();
                        return id+""+nom;
                }
                return null;
        }
public static void main(String arg[]){
       
        Personne p1=new Personne();
        p1.setNom("Amine");
        p1.setId(0xAA3567B2C4FL);
        Personne p2=new Personne();
        p2.setId(0xAA93B10CD00L);
        p2.setNom("Ali");
        }
}

---

thanks

Service operations can only operate on concrete implementations. This is not a limitation of WCF, this is a limitation (or, feature) of WSDL. So, if you want to accept any type to a generic Load() operation, and specify the type in the call, you'll have to design a contract that receives the type T as a parameter, and returns a List<object> or object[] that is an array of that type. I think you are fixated on the syntax looking like remoting, and generics...when what you really want is a solution that fits with semantics of service design.

Why not this?

List<object> Load(string objectType);

thanks ,
my probleme concerne my methode getPersonne returns the id and name