New multithreaded implementation of the EchoServer

EchoServer.java

package uk.ac.qub.networking;

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

public class NewEchoServer {

    public static void main(String[] args) {
        int port = 12321;
        NewEchoServer server = new NewEchoServer( port );
        server.startServer();
    }
    
    ServerSocket newEchoServer = null;
    Socket clientSocket = null;
    int numConnections = 0;
    int port;
    
    public NewEchoServer( int port ) {
        this.port = port;
    }
    
    public void startServer() {
        try {
            newEchoServer = new ServerSocket(port);
        }
        catch (IOException e) {
            System.out.println(e);
        }
        
    System.out.println("Server started.  Waiting for connections.");
    
    while ( true ) {
        try {
            clientSocket = newEchoServer.accept();
            numConnections++;
            newEchoServerConnection connection = new newEchoServerConnection (
                    clientSocket, numConnections, this);
            new Thread(connection).start();
        }
        catch (IOException e) {
            System.out.println(e);
        }
    }
    }
}

class newEchoServerConnection implements Runnable {
    BufferedReader input;
    PrintStream output;
    Socket clientSocket;
    int id;
    NewEchoServer server;
 
    public newEchoServerConnection(Socket clientSocket, int id, NewEchoServer server) {
        this.clientSocket = clientSocket;
        this.id = id;
        this.server = server;
        System.out.println("Connection "+ id +" established with : "
                + clientSocket);
        try {
            input = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
            output = new PrintStream(clientSocket.getOutputStream());
        } catch (IOException e) {
            System.out.println(e);
        }
    }
    
    public void run() {
        String line;
        
        try {
                while(true) {
                    line = input.readLine();
                    System.out.println( "Received: "+ line + " from connection "+ id + ".");
                    output.println("SERVER> "+ line);
                    System.out.println( "Sent: "+ line + " to client "+ id + ".");
                }
        } catch (IOException e) {
            System.out.println(e);
        }
    }
}