RMI template

//Server.java
import java.rmi.Remote;
import java.rmi.Naming;
import java.rmi.server.UnicastRemoteObject;
interface Interf extends Remote{
    public String sayHello(String name) throws Exception;
}
class Implementation extends UnicastRemoteObject implements Interf{
    Implementation() throws Exception{
        System.out.println("An instance of the Server is running.");
    }
    public String sayHello(String name) throws Exception{
        return " Hello "+name+"!";
    }
}
public class Server{
    public static void main(String args[]){
        try{
            Naming.rebind("AnythingYouWant", new Implementation());
        } catch(Exception e){e.printStackTrace();}
    }
}

//Client.java
import java.rmi.Naming;
import java.util.Scanner;
public class Client{
    public static void main(String[] args){
        try{
            Scanner sc = new Scanner(System.in);
            Interf interf = (Interf)Naming.lookup("rmi://localhost/AnythingYouWant");
            System.out.println(interf.sayHello(sc.next()));
        } catch(Exception e){e.printStackTrace();}
    }
}