rmi

1. IMPLEMENTATION OR RMI ARITHMETIC OPERATIONS
/* cal.java*/
import java.rmi.*;
public interface cal extends Remote
{
public int add(int x,int y) throws RemoteException;
public int sub(int x,int y) throws RemoteException;
public int mul(int x,int y) throws RemoteException;
public int div(int x,int y) throws RemoteException;
}
/* calimp.java*/
import java.rmi.*;
import java.rmi.server.*;
import java.io.*;
public class calimp extends
UnicastRemoteObject implements cal
{
public calimp() throws RemoteException
{
super();
}
public int add(int x,int y) throws RemoteException
{
return x+y;
}
public int sub(int x,int y) throws RemoteException
{
return x-y;
}
public int mul(int x,int y) throws RemoteException
{
return x*y;
}
public int div(int x,int y) throws RemoteException
{
return x/y;
}
}
/* calserver.java*/
import java.rmi.*;
import java.rmi.server.*;
public class calserver

2. {
public static void main(String args[])
{
try
{
calimp c=new calimp();
System.out.println("Binding Server implementation to registry ..");
Naming.rebind("WIN",c);
System.out.println("Registered");
System.out.println("Waiting for client to connect ...");
}
catch(Exception e)
{
e.printStackTrace();
}
}
}
/* calclient.java*/
import java.rmi.*;
import java.rmi.server.*;
import java.io.*;
public class calclient
{
public static void main(String args[]) throws Exception
{
int a,b;
DataInputStream d =new DataInputStream(System.in);
boolean f=false;
String url="rmi://localhost/";
try
{
cal c = (cal) Naming.lookup(url+"WIN");
do
{
System.out.println("nCALCULATOR");
System.out.println(" 1.Add");
System.out.println(" 2.Subtract");
System.out.println(" 3.Multiply");
System.out.println(" 4.Divide");
System.out.println(" 5.Exit");
System.out.print("nEnter your choice : ");
switch(Integer.parseInt(d.readLine()))
{
case 1:

3. System.out.print("nADDITION");
System.out.print("nNumber 1t: ");
a=Integer.parseInt(d.readLine());
System.out.print("Number 2t: ");
b=Integer.parseInt(d.readLine());
System.out.println("Sumtt: " + c.add(a,b));
break;
case 2:
System.out.print("nSUBTRACTION");
System.out.print("nNumber 1t: ");
a=Integer.parseInt(d.readLine());
System.out.print("Number 2t: ");
b=Integer.parseInt(d.readLine());
System.out.println("Differencet: " + c.sub(a,b));
break;
case 3:
System.out.print("nMULTIPLICATION");
System.out.print("nNumber 1t: ");
a=Integer.parseInt(d.readLine());
System.out.print("Number 2t: ");
b=Integer.parseInt(d.readLine());
System.out.println("Producttt: " + c.mul(a,b));
break;
case 4:
System.out.print("nDIVISION");
System.out.print("nNumber 1t: ");
a=Integer.parseInt(d.readLine());
System.out.print("Number 2t: ");
b=Integer.parseInt(d.readLine());
System.out.println("Quotientt: " + c.div(a,b));
break;
case 5:
System.out.print("nProgram Terminatednn");
f=true;
break;
}
d.readLine();
}while(!f);
}
catch(Exception e)
{
System.out.println("Error");
}
}
}

4. OUTPUT:
CALCULATOR
1.Add
2.Subtract
3.Multiply
4.Divide
5.Exit
Enter your choice : 1
ADDITION
Number 1 : 23
Number 2 : 34
Sum : 57
CALCULATOR
1.Add
2.Subtract
3.Multiply
4.Divide
5.Exit
Enter your choice : 2
SUBTRACTION
Number 1 : 45
Number 2 : 11
Difference : 34
CALCULATOR
1.Add
2.Subtract
3.Multiply
4.Divide
5.Exit
Enter your choice : 3
MULTIPLICATION
Number 1 : 45
Number 2 :3
Product : 135

5. CALCULATOR
1.Add
2.Subtract
3.Multiply
4.Divide
5.Exit
Enter your choice : 4
DIVISION
Number 1 : 32
Number 2 : 16
Quotient :2
CALCULATOR
1.Add
2.Subtract
3.Multiply
4.Divide
5.Exit
Enter your choice : 5
Program Terminated