RMI (Remote Method Invocation)-----Write a RMI Program to Simple hello messages.

Aim: - Write a RMI Program to Simple hello messages.

Tools: - NetBeans IDE, jdk

Program:-

 

Interface:-

import java.rmi.Remote;

public interface calculator extends Remote {

    public String Printmsg() throws java.rmi.RemoteException;    

}

Server:-

import java.rmi.RemoteException;

import java.rmi.registry.LocateRegistry;

import java.rmi.server.UnicastRemoteObject;

import java.rmi.registry.Registry;

public class Rmicalc implements calculator{

String  message;

     public Rmicalc(String msg){

            message=msg;     }    

    public String Printmsg() throws java.rmi.RemoteException{

            return message;   }  

public static void main(String[] args) throws RemoteException {

        Rmicalc rm=new Rmicalc("demo print msg");

        calculator stub=(calculator) UnicastRemoteObject.exportObject(rm,0);

        Registry reg=LocateRegistry.getRegistry();

        reg.rebind("demo", stub);

       System.out.println("server is ready");    }   

}

Client:-

import java.lang.invoke.MethodHandles;

import java.rmi.NotBoundException;

import java.rmi.Remote;

import java.rmi.RemoteException;

import java.rmi.registry.LocateRegistry;

import java.rmi.registry.Registry;

       

public class client  {

    public static void main(String s[]) throws RemoteException, NotBoundException{

            Registry reg=LocateRegistry.getRegistry("localhost");

            calculator skelton=(calculator)reg.lookup("demo");

System.out.println();

            System.out.println("Message is :  " + skelton.Printmsg());       

    }

Output:-