Thread: Please help

Assignment is next: You need to create an application for adding two numbers. The addition operation itself needs to take place on the server, which accepts the two additions and delivers the result. Therefore, it is necessary that the solution contains two components: server and client.

Within the client application, the user needs to be able to enter two numbers using the Scanner class. Values ​​need to be placed inside variables and then sent to the server part of the application. Values ​​can be sent together or separately. After accepting the value, the server should add the passed numbers and deliver the total to the client. The obtained total must be displayed on the client at the output.


I can't manage to code so that the addition is done on the server and the result is sent to the client. Please help me.

Actually every computer has the capability of doing math computations. It does matter if it's on a server or client. The idea is passing programs across networks. Like png files. Server to client. Any computer does math computations.

Sure, here's a basic outline of how you can accomplish this task:

Server-side code:

import java.io.*;
import java.net.*;

public class Server {
public static void main(String[] args) throws IOException {
ServerSocket serverSocket = new ServerSocket(12345);
System.out.println("Server started. Waiting for client...");

while (true) {
Socket clientSocket = serverSocket.accept();
System.out.println("Client connected.");

BufferedReader in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
PrintWriter out = new PrintWriter(clientSocket.getOutputStream(), true);

// Read numbers from client
double num1 = Double.parseDouble(in.readLine());
double num2 = Double.parseDouble(in.readLine());

// Perform addition
double result = num1 + num2;

// Send result back to client
out.println("The sum is: " + result);

// Close connection
clientSocket.close();
}
}
}

Client-side code:

import java.io.*;
import java.net.*;
import java.util.Scanner;

public class Client {
public static void main(String[] args) throws IOException {
Scanner scanner = new Scanner(System.in);

// Connect to server
Socket socket = new Socket("localhost", 12345);
BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
PrintWriter out = new PrintWriter(socket.getOutputStream(), true);

// Input numbers from user
System.out.println("Enter first number:");
double num1 = scanner.nextDouble();
System.out.println("Enter second number:");
double num2 = scanner.nextDouble();

// Send numbers to server
out.println(num1);
out.println(num2);

// Receive result from server
String result = in.readLine();
System.out.println("Result from server: " + result);

// Close connection
socket.close();
scanner.close();
}
}

Make sure to run the server before running the client. This code sets up a simple client-server architecture where the client sends two numbers to the server, the server performs the addition, and sends the result back to the client.

Once you've run the server and the client, you should see the result of the addition displayed on the client's side. If you encounter any difficulties with your Java assignment or need further assistance with programming tasks, don't hesitate to seek guidance from reliable sources. There are various resources available online that can provide help with Java assignment and programming tasks, offering valuable insights and support to enhance your learning experience.