Socket IP example 1

client.java

import java.util.Scanner;
import java.net.Socket;
import java.io.IOException;

/**
 * A command line client for the date server. Requires the IP address of
 * the server as the sole argument. Exits after printing the response.
 */
public class Client {
    public static void main(String[] args) throws IOException {
        if (args.length != 1) {
            System.err.println("Pass the server IP as the sole command line argument");
            return;
        }
        //Create a client socket
        //first argument is ip
        //second is port
        Socket socket = new Socket(args[0], 1090);

        //get the input stream  of sockets
        Scanner in = new Scanner(socket.getInputStream());
        //read from the  inputstream

        System.out.println("Server response: " + in.nextLine());
    }
}

Server.java

import java.io.IOException;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Date;

public class Server {
    public static void main(String[] args) throws IOException {
        //Wait on port 
        try (ServerSocket listener = new ServerSocket(1090)) {
            

            //The server is up
            System.out.println("The server is running...");
            //inifite loop
            while (true) {
                //Wait for a connection from client 
                try (Socket socket = 
                    listener.accept()) {

                       //link output to the socket 
                    PrintWriter out = 
                    new PrintWriter(socket.getOutputStream(), true);

                    //send something to the client
                    out.println(new Date().toString());
                }
            }
        }
    }
}