Java rmi tuto oracle

package ccm.rmi;
 
import java.rmi.Remote;
import java.rmi.RemoteException;

public interface Hello extends Remote
{
    String BIND = "ccm.rmi.Hello";
    String sayHello(String name) throws RemoteException;
}

package ccm.rmi;

import java.rmi.registry.Registry;
import java.rmi.registry.LocateRegistry;
import java.rmi.server.UnicastRemoteObject;

public class Server implements Hello
{
    public String sayHello(String name)
    {
        return "Hello "+name+" !";
    }

    public static void main(String args[]) throws Exception
    {
        Hello hello = (Hello) UnicastRemoteObject.exportObject(new Server(), 0);
        Registry registry = LocateRegistry.getRegistry();
        registry.bind(Hello.BIND, hello);
        System.out.println("server ready");
    }
}

package ccm.rmi;
 
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;

public class Client 
{
    public static void main(String[] args) throws Exception
    {
        Registry registry = LocateRegistry.getRegistry("localhost");
        Hello hello = (Hello) registry.lookup(Hello.BIND);
        System.out.println(hello.sayHello("World"));
    }
}

javac -d C:\Workspace\RMI\bin C:\Workspace\RMI\src\ccm\rmi\*.java
start rmiregistry -J-Djava.rmi.server.codebase=file:///C:/Workspace/RMI/bin/
start java -classpath C:\Workspace\RMI\bin ccm.rmi.Server 
java -classpath C:\Workspace\RMI\bin ccm.rmi.Client
pause