Chapter 10.6, Problem 35STQ

Explanation of Solution

 Modified program:

 The below highlighted parts are the modified codes in the server and client programs.

 Server program:

//import required header files

import java.util.Scanner;

import java.io.InputStreamReader;

import java.io.DataOutputStream;

import java.io.PrintWriter;

import java.net.Socket;

import java.net.ServerSocket;

//definition of "SocketServer" class

public class SocketServer

{

    //definition of main method

    public static void main(String[] args)

    {

        //declare the objects for the classes

        Scanner inputStream = null;

        PrintWriter outputStream = null;

        ServerSocket serverSocket = null;

        //try block

        try

        {

            // wait for connection on port 6789

System.out.println("Waiting for a connection.");

            serverSocket = new ServerSocket(6789);

            Socket socket = serverSocket.accept();

            // connection made, set up streams

inputStream = new Scanner(new InputStreamReader(socket.getInputStream()));

outputStream = new PrintWriter(new DataOutputStream(socket.getOutputStream()));

            //get the input from the client

            int i = inputStream.nextInt();

            int j = inputStream.nextInt();

            //send the output to the client

            outputStream.println(i + j);

            //flush the stream  

            outputStream.flush();

            //display the statement

System.out.println("The connection is closed ");

            //close the connections

            inputStream.close();

            outputStream.close();

        }

        //catch block

        catch (Exception e)

        {

            // display the exception

            System.out.println("Error " + e);

        }

    }

}

 Client program:

//import required header files

import java...