Remote Method Invocation RMI program code using Java

The program is written 3 files namely :RMI.java , RMIserver.java, RMIclient.java. This program implements RMI concept in java .
The Java Remote Method Invocation Application Programming Interface, or Java RMI, is a Java API that performs the object-oriented equivalent of remote procedure calls , with support for direct transfer of serialized Java objects and distributed garbage collection.

CODE:

RMI.java

import java.rmi.*;

public interface RMI extends Remote

{

void receiveMessage(String x) throws RemoteException;

}

RmiServer.java

import java.rmi.*;

import java.rmi.registry.*;

import java.rmi.server.*;

import java.net.*;

public class RmiServer extends java.rmi.server.UnicastRemoteObject

implements RMI

{

    int      thisPort;

    String   thisAddress;

    Registry registry;    // rmi registry for lookup the remote objects.

    // This method is called from the remote client by the RMI.

    // This is the implementation of the “ReceiveMessageInterface”.

    public void receiveMessage(String x) throws RemoteException

    {

        System.out.println(x);

    }

    public RmiServer() throws RemoteException

    {

        try{

            // get the address of this host.

            thisAddress= (InetAddress.getLocalHost()).toString();

        }

        catch(Exception e){

            throw new RemoteException("Can't get inet address.");

        }

        thisPort=3232;  // this port(registry’s port)

        System.out.println("This address="+thisAddress+",port="+thisPort);

        try{

        // create the registry and bind the name and object.

        registry = LocateRegistry.createRegistry( thisPort );

            registry.rebind("rmiServer", this);

        }

        catch(RemoteException e){

        throw e;

        }

    }

  

    static public void main(String args[])

    {

        try{

        RmiServer s=new RmiServer();

    }

    catch (Exception e) {

           e.printStackTrace();

           System.exit(1);

    }

     }

}

RmiClient.java

import java.rmi.*;

import java.rmi.registry.*;

import java.net.*;

public class RmiClient

{

    static public void main(String args[])

    {

       RMI rmiServer;

       Registry registry;

       String serverAddress=args[0];

       String serverPort=args[1];

       String text=args[2];

       System.out.println("Sending "+text+" to "+serverAddress+":"+serverPort);

       try{

           // get the “registry”

           registry=LocateRegistry.getRegistry(

               serverAddress,

               (new Integer(serverPort)).intValue()

           );

           // look up the remote object

           rmiServer=

              (RMI)(registry.lookup("rmiServer"));

           // call the remote method

           rmiServer.receiveMessage(text);

       }

       catch(RemoteException e){

           e.printStackTrace();

       }

       catch(NotBoundException e){

           e.printStackTrace();

       }

    }

}

OUTPUT:

Server Output:-

C:\Program Files\Java\jdk1.5.0\bin>javac RMI.java

C:\Program Files\Java\jdk1.5.0\bin>javac RmiServer.java

C:\Program Files\Java\jdk1.5.0\bin>rmic RmiServer

C:\Program Files\Java\jdk1.5.0\bin>java RmiServer

This address=i3-05/192.168.100.180,port=3232

Hi,

This

is

Ascyena

Client Output:-
C:\Program Files\Java\jdk1.5.0\bin>javac RmiClient.java

C:\Program Files\Java\jdk1.5.0\bin>java RmiClient 192.168.100.180 3232 Hi,

Sending Hi, to 192.168.100.180:3232

C:\Program Files\Java\jdk1.5.0\bin>java RmiClient 192.168.100.180 3232 This

Sending This to 192.168.100.180:3232

C:\Program Files\Java\jdk1.5.0\bin>java RmiClient 192.168.100.180 3232 is

Sending is to 192.168.100.180:3232

C:\Program Files\Java\jdk1.5.0\bin>java RmiClient 192.168.100.180 3232 Ascyena

Sending Ascyena to 192.168.100.180:3232

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