Implementation of Remote Procedure Call

import java.rmi.*;
import java.io.*;

public class CalculatorClient
{   
public static void  main(String args[])
{
try{
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
Calculator p=(Calculator)Naming.lookup(“Cal”);

System.out.println(“Enter fisrt number”);
String strFirst=br.readLine();

System.out.println(“Enter second number”);
String strSecond=br.readLine();

System.out.println(“Sum : “+p.sum(Integer.parseInt(strFirst),Integer.parseInt(strSecond)));
System.out.println(“Sub : “+p.sub(Integer.parseInt(strFirst),Integer.parseInt(strSecond)));
System.out.println(“Mul : “+p.mul(Integer.parseInt(strFirst),Integer.parseInt(strSecond)));
}
catch(Exception e)
{
System.out.println(“Exception occurred : “+e.getMessage());
}
}
}

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

public class CalculatorServer extends UnicastRemoteObject implements Calculator
{
public CalculatorServer()throws RemoteException
{
System.out.println(“Server is Instantiated”);
}

public int sum(int first,int Second) throws RemoteException   
{
return first+Second;
}   

public int sub(int first,int Second) throws RemoteException   
{
return first-Second;
}   

public int mul(int first,int Second) throws RemoteException   
{
return first*Second;
}   

public static void main(String arg[])
{
try{
CalculatorServer p=new CalculatorServer();
Naming.rebind(“Cal”,p);
}catch(Exception e)
{
System.out.println(“Exception occurred : “+e.getMessage());
}
}
}

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

public class prac2s extends UnicastRemoteObject implements prac2i
    {
    public prac2s()throws RemoteException
    {
System.out.println(“Server created”);
    }

    public String showdate() throws RemoteException   
        {
    Date d=new Date();
    return d.toString();
        }
    public String showtime() throws RemoteException   
        {
    Date d=new Date();
    String s=d.getHours()+”:”+d.getMinutes()+”:”+d.getSeconds();
    return s;
        }
   
    public static void main(String arg[])
    {
        try{   
        prac2s p=new prac2s();
        Naming.rebind(“xyz”,p);
   
        }catch(Exception e){}
    }
}

import java.rmi.*;

    public class prac2c
    {   
    public static void  main(String args[])
    {
    try{
    prac2i p=(prac2i)Naming.lookup(“xyz”);
    System.out.println(p.showdate());
    System.out.println(p.showtime());
        }catch(Exception e){e.printStackTrace();}
    }
    }