Implementation of Remote Method Invocation ( RMI )

/* Implementation of Remote Method Invocation ( RMI ) */

// RMIServerInter.java : A Simple RMI Server Interface Program

import java.rmi.*;

public interface RMIServerInter extends Remote

{

public double add(double d1,double d2) throws RemoteException;

public double sub(double d1,double d2) throws RemoteException;

public double mul(double d1,double d2) throws RemoteException;

public double div(double d1,double d2) throws RemoteException;

}

// RMIServerImpl.java : A Simple RMI Server Implementation Program

import java.rmi.*;

import java.rmi.server.*;

public class RMIServerImpl extends UnicastRemoteObject

implements RMIServerInter

{

public RMIServerImpl() throws Exception

{

}

public double add(double d1,double d2) throws RemoteException

{         

return d1+d2; 

}

public double sub(double d1,double d2) throws RemoteException

{

return d1-d2;

}

public double mul(double d1,double d2) throws RemoteException

{

return d1*d2;

}

public double div(double d1,double d2) throws RemoteException

{

return d1/d2;

}

}

// RMIServer.java : A Simple RMI Server Program

import java.rmi.*;

import java.net.*;

public class RMIServer

{

public static void main(String args[])

{

try

{

RMIServerImpl ad=new RMIServerImpl();

Naming.rebind("RMIServer",ad);

}

catch(Exception e)

{

System.out.println("Error ... " + e.getMessage());

}

}

}

// RMIClient.java : A Simple RMI Client Program

import java.rmi.*;

import java.net.*;

public class RMIClient

{

public static void main(String args[])

{

try

{

String serverurl="rmi://localhost/RMIServer";

RMIServerInter ad=(RMIServerInter) Naming.lookup(serverurl);

System.out.println("The Sum of the values is : "+ ad.add(50,20));

System.out.println("The Difference of the values is : "+ad.sub(40,20));

System.out.println("The Product of the values is : "+ ad.mul(25,20));

System.out.println("The Divition of the values is : "+ ad.div(200,20));

}

catch(Exception e)

{

System.out.println("Error ... " + e.getMessage());

}

}

}

OUTPUT :

RMIServerInter.java :

javac RMIServerInter.java

RMIServerImpl.java :

javac RMIServerImpl.java

RMIServer.java :

javac RMIServer.java

RMIClient.java :

javac RMIClient.java

Start RMI Registry :

start  rmiregistry

RMIServerImpl.class:

rmic RMIServerImpl

javac RMIClient.java

javac RMIServer.java

javac RMIServerImpl.java

javac RMIServerInter.java

RMIServer.java :

java RMIServer

RMIClient.java :

java RMIClient

The Sum of the values is : 70.0

The Difference of the values is : 20.0

The Product of the values is : 500.0

The Divition of the values is : 10.0