problem in rmi

[deepak kushwaha]

i want to use rmi on local host so i made three things first myremote interface:

import java.rmi.*;
public interface myremote extends Remote{
public String sayhello() throws RemoteException;
}

2.) myremoteimpl class:

import java.rmi.*;
import java.rmi.server.*;


public class myremoteimpl extends UnicastRemoteObject implements myremote{
public String sayhello(){
return "server says,'hey'";
}
public myremoteimpl() throws RemoteException{}
public static void main(String[] args){
try{
myremote service=new myremoteimpl();
Naming.rebind("Remote Hello", service);
 }
catch(Exception ex){
ex.printStackTrace();
}
}
}  

3.)and my remoteclient class :

import java.rmi.*;

public class myremoteclient{
public static void main(String[] args){
new myremoteclient().go();
}

public void go(){
try{
myremote service=(myremote) Naming.lookup("rmi://127.0.0.1/Remote Hello");
String s=service.sayhello();
System.out.println(s);
}
catch(Exception ex){
ex.printStackTrace();
}
}
}

i first compiled all classes ,then i used rmic to extract stub class from my myremoteimpl(it doesnt gave me skeleton class out); and then in other console started rmiregistry, and then started myremoteimpl.java , so that the server is up . but it gave me javamalformedexeption: invalid url string, what is the reason, i double checked all the things but couldnt resolve the problem.
please help


[NK: Please UseCodeTags]

[Tom Reilly]

I have not done RMI in years so decided to try it. I was able to compile your code and reproduce your error. I removed the space between "Remote" and "Hello" as in the following code:

Naming.rebind("RemoteHello", service);

and the error went away (actually it was replaced by another error but that's my problem :-). If you absolutely need the space then try using java.net.URLEncoder.

[deepak kushwaha]

thanks tom for your reply, but this time when i removed the spaces and try to run rmi registry its giving me java.rmi.server.ExportExeption : listen failed on port 1099 , i cant understand what is the problem

[Rene Larsen]

Did you shutdown the rmiregistry before you tried to start it again??

The code works if the space is removed - without any new errors.

[deepak kushwaha]

Rene Larsen wrote:Did you shutdown the rmiregistry before you tried to start it again??

The code works if the space is removed - without any new errors.

hey!! thanks it worked !!!

[deepak kushwaha]

but let say i want to register my service by the name "Remote Hello" with spaces, what should i do???

[Tom Reilly]

If you absolutely need the space then try using java.net.URLEncoder.

[deepak kushwaha]

i cant understand how to use that. i am not able to understand what this method saying. i mean i am unable to read the documentation.

[Tom Reilly]

Here is an example:

Naming.rebind(URLEncoder.encode("Remote Hello", "UTF-8"), service);

[deepak kushwaha]

thanks