import java.rmi.Naming; 
import java.rmi.RemoteException; 
import java.net.MalformedURLException; 
import java.rmi.NotBoundException; 
 
public class CalculatorClient { 
 
    public static void main(String[] args) { 

        // determine the machine of the server
        if (args.length == 0)
           serverName = "127.0.0.1";
        else
           serverName = args[0];
        String rmiName = "rmi://" + serverName + "/CalculatorService");

        System.out.println ("Connecting to: " + rmiName);

        try { 
            Calculator c = (Calculator)
                           Naming.lookup(rmiName);
                 // "rmi://localhost/CalculatorService"); 

            System.out.println( c.sub(4, 3) ); 
            System.out.println( c.add(4, 5) ); 
            System.out.println( c.mul(3, 6) ); 
            System.out.println( c.div(9, 3) ); 
        } 
        catch (MalformedURLException murle) { 
            System.out.println(); 
            System.out.println(
              "MalformedURLException"); 
            System.out.println(murle); 
        } 
        catch (RemoteException re) { 
            System.out.println(); 
            System.out.println(
                        "RemoteException"); 
            System.out.println(re); 
        } 
        catch (NotBoundException nbe) { 
            System.out.println(); 
            System.out.println(
                       "NotBoundException"); 
            System.out.println(nbe); 
        } 
        catch (
            java.lang.ArithmeticException
                                      ae) { 
            System.out.println(); 
            System.out.println(
             "java.lang.ArithmeticException"); 
            System.out.println(ae); 
        } 
    } 
}