Java Programming

I am trying to make a very simple client server application.

First I start the server which waits for a client to connect.

The client enters some text in the console and the server should simply print this text in the same console.

But that does not work. I just see the input text from the client very quickly and then it dissappears. Afterwards when I type some text i does not get printed.

The client is not meant to see the text printed by the server.

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

public class Client
{
	public static void main(String[] args) throws IOException
    {
		Socket echoSocket = null;
        try
        {
        	echoSocket = new Socket("localhost",7);
        }
        catch (UnknownHostException e)
        {
            System.err.println("Don't know about host: localhost.");
            System.exit(1);
        }
        catch (IOException e)
        {
            System.err.println(e);
            System.exit(1);
        }

        BufferedReader stdIn = new BufferedReader(
                                   new InputStreamReader(System.in));
        String userInput;        
        while ((userInput = stdIn.readLine()) != null)
        {
        	DataOutputStream toServer = new DataOutputStream(echoSocket.getOutputStream());
        	toServer.writeBytes(userInput + '\n');
        }
        
        stdIn.close();
        echoSocket.close();
    }
}

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

import com.sun.corba.se.internal.POA.ClientSC;
 
public class EchoServer
{
    public static void main(String argv[]) throws IOException
    {
    	String clientSentence;
    	ServerSocket welcome = new ServerSocket(7);    	
    	System.out.println("Waiting"); 	
    	while(true)
    	{
    		Socket connection = welcome.accept();
        	InputStreamReader in = new InputStreamReader(connection.getInputStream());
    		BufferedReader inFromClient = new BufferedReader(in);
    		clientSentence = inFromClient.readLine();
    		System.out.println(clientSentence);    		
    		
    	}
   	
    }
}

What am I missing? Does the server need to open its own instance of the console??