Array of Sockets

Question

Hi, I am new with Socket programming and I have read a java tutorial that talks about socket. I am trying this server (sample program from the tutorial):
import java.net.*;
import java.io.*;
public class MultiServer3333 {
public static void main(String[] args) throws IOException {
ServerSocket serverSocket = null;
boolean listening = true;
try {
serverSocket = new ServerSocket(3333);
} catch (IOException e) {
System.err.println("Could not listen on port: 3333.");
System.exit(-1);
while (listening){
new KKMultiServerThread(serverSocket.accept()).start();
serverSocket.close();
this server program supports multiple clients, but what i am trying is a client program that has an array of sockets, an error would usually yield to a NullPointerException when the clientSocket[i] = new Socket(ipAddress, portNumbers); code is reached.
here is my client code:
System.out.println("init method");
try {
for(int i = 0; i < 3; i++) {
System.out.println("Creating socket connection at port[" + portNumbers[i] + "]");
clientSocket[i] = new Socket(ipAddress, portNumbers[i]);
out[i] = new PrintWriter(clientSocket[i].getOutputStream(), true);
System.out.println("Assigning clientSocket to PrintWriter");
in[i] = new BufferedReader(new InputStreamReader(clientSocket[i].getInputStream()));
System.out.println("Assigning PrintWriter to BufferedReader");
Tell me, is an array of socket not advisable? or not supported?
Thanks in advance!

Answer 1

I think you should create a thread associated to
each one of your connexion
Each thread would contain a socket...
hope it helps