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Client-Server invoking methods in one JVM from another

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The shared remote interface: 

package remote;

import java.rmi.Remote;
import java.rmi.RemoteException;

public interface RemoteServer extends Remote {

    int stringToInt(String string) throws RemoteException;
}

The server implementing the shared remote interface: 

package server;

import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import java.rmi.server.UnicastRemoteObject;

import remote.RemoteServer;

public class Server implements RemoteServer {

    @Override
    public int stringToInt(String string) throws RemoteException {

        System.out.println("Server received: \"" + string + "\"");
        return Integer.parseInt(string);
    }

    public static void main(String[] args) {

        try {
            Registry reg = LocateRegistry.createRegistry(Registry.REGISTRY_PORT);
            Server server = new Server();
            UnicastRemoteObject.exportObject(server, Registry.REGISTRY_PORT);
            reg.rebind("ServerName", server);
        } catch (RemoteException e) {
            e.printStackTrace();
        }
    }
}

The client invoking a method on the server (remotely): 

package client;

import java.rmi.NotBoundException;
import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;

import remote.RemoteServer;

public class Client {

    static RemoteServer server;

    public static void main(String[] args) {

        try {
            Registry reg = LocateRegistry.getRegistry();
            server = (RemoteServer) reg.lookup("ServerName");
        } catch (RemoteException | NotBoundException e) {
            e.printStackTrace();
        }

        Client client = new Client();
        client.callServer();
    }

    void callServer() {
    
        try {
            int i = server.stringToInt("120");
            System.out.println("Client received: " + i);
        } catch (RemoteException e) {
            e.printStackTrace();
        }
    }
}

Output:

Server received: “120”

Client received: 120

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Remote Method Invocation (RMI):
* Remote Method Invocation RMI
* Callback invoking methods on a client
* Client-Server invoking methods in one JVM from another
* Simple RMI example with Client and Server implementation
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0 Inheritance
1 Getting started with Java
2 Streams
3 Exceptions
4 Collections
5 Lambda Expressions
6 Generics
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27 Networking
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30 HttpURLConnection
31 Annotations
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33 Data Class
34 Calendar and its Subclasses
35 Nashorn JavaScript engine
36 Java Native Interface (JNI)
37 Remote Method Invocation (RMI)
38 Iterator and Iterable
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91 Performance Tuning
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93 Common Pitfalls
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95 Java Compiler
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98 Process
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101 Fluent Interface
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103 Just in Time JIT compiler
104 FTP File Transfer Protocol
105 Java Native Access JNI
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119 Splitting a string into fixed length parts
120 Pitfalls - nulls and NullPointerException
121 SecurityManager
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124 java.util.Objects class
125 Java command: java and javaw
126 Atomic types
127 Floating Point Operations
128 Converting to and from strings
129 sun.misc.Unsafe
130 Java Memory Model
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137 Java Virtual Machine JVM
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152 Generating Java Code
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162 Functional interfaces
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171 Immutable class
172 String Tokenizer
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176 Enum starting with a number
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180 StringBuffer
181 Choosing Collections
182 C++ Comparison
183 CompletableFuture
184 Contributors