tcpserver.java

this is a TCP server.

import java.io.*;
import java.net.*;
class TCPserver {
public static void main(String argv[]) throws Exception
{
String clientSentence;
String capitalizedSentence;
FileOutputStream fos = new FileOutputStream("theText.txt");
		PrintStream myOutput = new PrintStream(fos);

ServerSocket welcomeSocket = new ServerSocket(6790);
while(true) {
Socket connectionSocket = welcomeSocket.accept();
BufferedReader inFromClient =
new BufferedReader(new
InputStreamReader(connectionSocket.getInputStream()));
DataOutputStream outToClient =
new DataOutputStream(connectionSocket.getOutputStream());

while((clientSentence = inFromClient.readLine()) != null)
{
System.out.println(clientSentence);
myOutput.println(clientSentence);
}

capitalizedSentence = clientSentence.toUpperCase() + '\n';
outToClient.writeBytes(capitalizedSentence);
}
}
}