Broadcasting a message to a # of clients

Question

as the subject indicates, i'm trying to broadcast a message to a number of clients. i have a main server running and say have 5 clients connected to it.
my code is as follows:
String s = "Hello Hollywood!"
for(int i = 0; i < ipadds.length; i++)
try
sock = new Socket(ipadds, 2005);
out = new PrintWriter(socket.getOutputStream(), true);
out.println(s);
out.close();
sock.close ();
catch(Exception e) { System.out.println("Error"); }
where ipadds is a string of ip addresses, 1 for each of the 5 clients that have connected to the server. each instance of a client, all running on the localhost at the moment have also an instance of a ServerSocket listening on port 2005. however only the first client receives the message successfully. then loops again, comes to client 2 and complains..
can anyone see where i'm going wrong ?
thanks in advance guys
vinc

Answer 1

i'm well aware of that Bind Exception, but this is the error
java.lang.NullPointerException
at ChatClient.run(ChatClient.java:257)
at java.lang.Thread.run(Thread.java:595)
Exception in thread "Thread-5" java.lang.NullPointerException
at ChatClient.run(ChatClient.java:265)
at java.lang.Thread.run(Thread.java:595)
problem is this line here:
Socket socket= receives.accept(); on the client side
unless that's another way of saying bind problem. but the problem also didn't work in college on 2 machines, then obviously my for loop had these two ipaddresses etc