java.io.*;
import import java.net.*;
class TCPServer
{
public static void main (String argv[]) throws Exception
{
String clientSentence;
String capitalizedSentence;
ServerSocket welcomeSocket = new ServerSocket (6789);
while (true)
{
Socket connectionSocket = welcomeSocket.accept();
BufferedReader inFromClient = new (new BufferedReader InputStreamReader(connectionSocket.getInputStream()));
DataOutputStream outToClient = new DataOutputStream(connectionSocket.getOutputStream());
clientSentence = inFromCl...