Unable to generate Skeleton for RMI application

Question

Hello Friends,
I used one interface and implementation class to invoke RMI they are as follows
package com.rmi;
import java.rmi.Remote;
public interface CountRMI extends Remote {
     public int sum() throws java.rmi.RemoteException;
     public void sum(int _val) throws java.rmi.RemoteException;
     public int increment() throws java.rmi.RemoteException;
package com.rmi;
import java.rmi.server.UnicastRemoteObject;
import java.rmi.*;
public class CountRMImpl extends UnicastRemoteObject implements CountRMI {
     private int sum;
     public CountRMImpl(String name) throws RemoteException{
          super();
          try{
               Naming.rebind(name, this);
               sum=0;
          catch(Exception e){
               System.out.println("Exception:" + e.getMessage());
               e.printStackTrace();
               public int sum() throws RemoteException{
                    return sum;
               public void sum(int _val) throws RemoteException{
                    sum = _val;
               public int increment() throws RemoteException{
                    return ++sum;
Implementation class, when I compile both and run rmic CountRMImpl I got the following error,
public class CountRMImpl extends UnicastRemoteObject implements CountRMI
^
Error is stated at CountRMI
please help me to over come this.
Thanks,
Bhargavi.

Answer 1

package com.rmi;
public interface CountRMI extends java.rmi.Remote {
public int sum() throws java.rmi.RemoteException;
public void sum(int _val) throws java.rmi.RemoteException;
public int increment() throws java.rmi.RemoteException;
//Three methods to implement later ok
-------------------------------------------------javac----------------------------------------------------------------------------
package com.rmi;
public class CountRMImpl extends java.rmi.server.UnicastRemoteObject implements CountRMI
private int sum;
public CountRMImpl() throws Exception
super(); //it will call the constructor of the UnicastRemoteObject
sum=0;
public int sum() throws java.rmi.RemoteException
return sum;
public void sum(int _val) throws RemoteException
sum = _val;
public int increment() throws RemoteException
return ++sum;
-----------------------------javac and rmic-------------------------------------------------------------------------------
I think we need to write the rmiRegistry Application
But after compiling the below iam able to generate only the stub not the skeleton i dont understand why it is. But it is working whenever i use the Registry application i.e given below
public class Myregistry
public static void main(String args[]) throws Exception //Exception is RemoteException , bind so on
CountRMImpl c1=new CountRMImpl();
java.rmi.Naming.bind("uniquename",c1);
System.out.println("Hey binded the object CountRMImpl to the Registry");
now we need to run the rmiregistry first then check whether i.e binded correctly or not
start rmiregistry
java Myregistry
output: Hey binded the object CountRMImpl to the Registry
I asks the experts in the above every thing i got success but what happend to the skeleton that is not created by the command "rmic"
please give the information why