System.setProperty("java.security.policy", "security.policy");

        System.setSecurityManager(new SecurityManager());

        try {

            RMI_ServerInt myRemoteObject;
            myRemoteObject = (RMI_ServerInt)Naming.lookup("//192.168.137.1/ABC");

            System.out.println("Wysłano do servera: ");

            Scanner sc = new Scanner(System.in);
            System.out.print("Wporwadz pierwsza liczbę: ");
            int a = sc.nextInt();
            System.out.print("Wporwadz drugą liczbę: ");
            int b = sc.nextInt();
            System.out.print("Wporwadz pierwsza liczbę: ");
            String operation = sc.next();

            int result = myRemoteObject.getResault(a,b,operation);
            System.out.println("Otrzymana z serwera odpowiedź: " +result);

        } catch (Exception e) {

            e.printStackTrace();

        }