Executing an RMI application

[michael tall]

I have JSE6 installed. Trying very basic RMI with an interface, a server class and a client class. What are the steps to execute?

import java.rmi.Remote;
import java.rmi.RemoteException;
public interface Echo extends Remote {
    public void echo(String s4) throws RemoteException;
}
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import java.rmi.*;
import javax.naming.*;
public class EchoClient {
    private EchoClient() {}
    public static void main(String[] args) {
        try {
            Context c9 = new InitialContext();
            String s5 = "jefes";
            Echo e7 = (Echo) c9.lookup(s5);
            e7.echo("Drinks break");
        }
        catch(Exception e) {
            System.out.println(e.getMessage());
        }
    }
}
import java.io.*;
import javax.naming.*;
import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import java.rmi.server.UnicastRemoteObject;
public class EchoEngine implements Echo {
    public EchoEngine() {
    }
    public void echo(String s9) {
        System.out.println(s9);
    }
    public static void main(String[] args) {
        try {
            String name = "jefes";
            Echo skeleton = new EchoEngine();
            Echo stub = (Echo) UnicastRemoteObject.exportObject(skeleton); 
            Context c18 = new InitialContext();
            c18.rebind(name,stub);
            System.out.println("EchoEngine found");
        }
        catch(Exception e) {
            System.err.println("EchoEngine exception:");
            e.printStackTrace();
        }
    }
}

[Nitesh Kant]

Did you happen to go through this tutorial

[chandana nannapaneni]

I am trying to run a RMI application.I compiled and run the server side classes and set server.hostname=host. I compiled the client side classes.But when I try to run the client classes I get the following error.

java.rmi.UnknownHostException: Unknown host: host; nested exception is:
java.net.UnknownHostException: host
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(Unknown Source)
at sun.rmi.transport.tcp.TCPChannel.createConnection(Unknown Source)
at sun.rmi.transport.tcp.TCPChannel.newConnection(Unknown Source)
at sun.rmi.server.UnicastRef.invoke(Unknown Source)
at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(Unkn
own Source)
at java.rmi.server.RemoteObjectInvocationHandler.invoke(Unknown Source)
at $Proxy0.executeTask(Unknown Source)
ETC ETC


CAN ANYONE TELL ME WHAT MIGHT BE THE ERROR?

[Nitesh Kant]

Its often not a good idea to hijack other thread to ask a different question. Kindly post a new topic with your question.
Also KeepItDown

[chandana nannapaneni]

Hi,

The thread is about the RMI application and my question also deals about the same thing.The question is about an error while running an RMI application.

Chandana.