[SOLVED] java synchronous chat question

amboxer21 · 09-18-2012, 07:41 PM

I have a client and server in Java and want to loop the data handle until either the client or server closes out.

here is what i have so far

SERVER:

Code:

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

class ServerTest {
private static ServerSocket serverSocket;
private static Socket clientSocket;
private static BufferedReader bufferedReader;
private static PrintWriter printWriter;
private static String inputLine;

  public static void main(String[] args) {
	try {
	serverSocket = new ServerSocket(63400);
	clientSocket = serverSocket.accept();

	bufferedReader = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));

	  while((inputLine = bufferedReader.readLine()) != null)
	  System.out.println("SERVER: " + inputLine);
	}

		catch(IOException e) {
		System.out.println(e);
		}
  }
}

CLIENT:

Code:

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

class ClientTest {
private static Socket socket;
private static PrintWriter printWriter;

  public static void main(String[] args) {
        try {
        socket = new Socket("localhost",63400);
        printWriter = new PrintWriter(socket.getOutputStream(),true);
	String send_to;
	Scanner user_input = new Scanner(System.in);
	System.out.print("Message: ");
	send_to = user_input.next();
        printWriter.println(send_to);
        System.out.println("MESSAGE sent successfully.");
        }

		catch(Exception e) {
		System.out.println(e);
		}
    }
}

Instead of them both exiting after the server receives the clients message, how could I continue the chat?

amboxer21 · 09-18-2012, 08:20 PM

Solved my issue.

amboxer21 · 09-18-2012, 11:01 PM

So, I solved my issue. maybe I posted to early but here is the final code in case anyone else is having the same problem

CLIENT:

Code:

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

class Client {
private static String recv;
final static String quit = "quit";

  public static void main(String[] args) {

        try {
	String sendTo;
	Socket socket = new Socket("localhost",62400);
	  while(true) {
          PrintWriter bytesWritten = new PrintWriter(socket.getOutputStream(),true);
	  System.out.print("Message: ");
	  Scanner user_input = new Scanner(System.in);
	  sendTo = user_input.next();

	    if(sendTo.equals(quit)) {
	    bytesWritten.println("quit");
	    System.out.print("Quiting now.\n");
	    Thread.sleep(1000);
	    System.exit(0);
	    }
	    	else {
		bytesWritten.println(sendTo);
		}

	  BufferedReader bytesRead = new BufferedReader(new InputStreamReader(socket.getInputStream()));
	  recv = bytesRead.readLine();
	  System.out.println("SERVER: " + recv);
          }
	}

		catch(Exception e) {
		System.out.println(e);
		}
  }
}

SERVER:

Code:

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

class Server {
private static String recv;
final static String quit = "quit";

  public static void main(String[] args) {

	try {
	ServerSocket socket = new ServerSocket(62400);
	Socket clientSocket = socket.accept();
	  while(true) {
	  BufferedReader bytesRead = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
	    recv = bytesRead.readLine();
	      if(recv.equals(quit)) {
	      System.out.print("Client manually closed connection.\n");
	      System.exit(0);
	      }
	      	   else {
	           System.out.println("CLIENT: " + recv);
	           }

	  String sendTo;
          PrintWriter bytesWritten = new PrintWriter(clientSocket.getOutputStream(),true);
	  System.out.print("Message: ");
	  Scanner user_input = new Scanner(System.in);
	  sendTo = user_input.next();
	  bytesWritten.println(sendTo);
	  }
	}

		catch(IOException e) {
		System.out.println(e);
		}
  }
}

If you look at the code in my first post. I was using a while loop with the readline data handle. That was causing the issues. I built on it and added a while loop. Chat runs fine until you manually exit. Thanks