abstract class and method

hi

i have an abstract class with an abstract method

[CODE]import java.net.*;
import java.io.*;
abstract public class Protocol {

protected Passerelle passerelle;

public Passerelle getPasserelle(){
return passerelle;
}

public void setPasserelle(Passerelle pass){
passerelle=pass;
}

public Protocol(){
passerelle = new Passerelle();
}
abstract public String processInput(String theInput, Socket
socket);
} [/CODE]

i tried to had

[CODE]
abstract public String processInput(String theInput, Socket socket,
Object obj);
abstract public String processInput(String theInput, Object obj);
[/CODE]

we can't have some abstract method with the same name... java don't
like that...

are there a way to do that?

thanks

.