Loan server

<---Main Server Class--->

package taoshiflex.lab11;

import java.io.*;
import java.net.*;
import java.text.SimpleDateFormat;
import java.util.Date;

public class Exercise31_01Server {
    public static void main(String[] args) {
        try (ServerSocket serverSocket = new ServerSocket(8000)) {
            System.out.println("Exercise31_01Server started at " + new SimpleDateFormat("EEE MMM dd HH:mm:ss z yyyy").format(new Date()));

            while (true) {
                Socket socket = serverSocket.accept();
                System.out.println("Connected to a client at " + new SimpleDateFormat("EEE MMM dd HH:mm:ss z yyyy").format(new Date()));
                
                DataInputStream inputFromClient = new DataInputStream(socket.getInputStream());
                DataOutputStream outputToClient = new DataOutputStream(socket.getOutputStream());
                
                double annualInterestRate = inputFromClient.readDouble();
                int numberOfYears = inputFromClient.readInt();
                double loanAmount = inputFromClient.readDouble();

                // Calculate monthly and total payment
                double monthlyInterestRate = annualInterestRate / 1200;
                double monthlyPayment = (loanAmount * monthlyInterestRate) / (1 - (1 / Math.pow(1 + monthlyInterestRate, numberOfYears * 12)));
                double totalPayment = monthlyPayment * numberOfYears * 12;
                
                outputToClient.writeDouble(monthlyPayment);
                outputToClient.writeDouble(totalPayment);
                
                System.out.printf("Annual Interest Rate: %.2f\n", annualInterestRate);
                System.out.printf("Number of Years: %d\n", numberOfYears);
                System.out.printf("Loan Amount: %.2f\n", loanAmount);
                System.out.printf("Monthly Payment: %.2f\n", monthlyPayment);
                System.out.printf("Total Payment: %.2f\n", totalPayment);
            }
        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }
}

<---Client Class--->

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


class Exercise31_01Client {
    public static void main(String[] args) {
        try (Socket socket = new Socket("localhost", 8000)) {
            DataOutputStream outputToServer = new DataOutputStream(socket.getOutputStream());
            DataInputStream inputFromServer = new DataInputStream(socket.getInputStream());
            
            Scanner scanner = new Scanner(System.in);
            System.out.print("Enter annual interest rate: ");
            double annualInterestRate = scanner.nextDouble();
            System.out.print("Enter number of years: ");
            int numberOfYears = scanner.nextInt();
            System.out.print("Enter loan amount: ");
            double loanAmount = scanner.nextDouble();
            
            outputToServer.writeDouble(annualInterestRate);
            outputToServer.writeInt(numberOfYears);
            outputToServer.writeDouble(loanAmount);
            
            double monthlyPayment = inputFromServer.readDouble();
            double totalPayment = inputFromServer.readDouble();
            
            System.out.printf("Monthly Payment: %.2f\n", monthlyPayment);
            System.out.printf("Total Payment: %.2f\n", totalPayment);
            
            scanner.close();
        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }
}