IndexOutOfBoundsException Problem

Hi.

Could we see some code please?
I'm mainly after lines 60 to 70 in AssignmentServer.java please?

Cheers,
>> IM

i've been using textpad to do the code so i've given you lines 57 to 84 as i understand java and textpad numbering aren't the same?

            [CODE]public void run()
            {
                  String received;
                  Socket client2;


                  do
                  {
                        received = input.nextLine();

                        for(int i = 0; i <= AssignmentServer.clientSocket.size()-1; i++)
                        {
                              try
                              {
                                    client2 = AssignmentServer.clientSocket.elementAt(i);
                                    System.out.println("#1 " + client2);
                                    PrintWriter output = new PrintWriter(client2.getOutputStream(),true);
                                    //output = new PrintWriter(client2.getOutputStream(),true);
                                    output.println(received);
                                    System.out.println(received);
                              }
                              catch(IOException e)
                              {
                                    System.err.println(e);
                              }
                        }

                  }while (!received.equals("QUIT"));[/CODE]

> as i understand java and textpad numbering aren't the same?
They should be.. I know for fact that Notepad, and just about every other IDE has correct line numbering..

Back to the problem now...

Hmm.. I could only make a wild guess there.. Could you post the full content of the class "ClientHandler" (from within the AssignmentServer), please?

Ta,
>> IM

sure...

private static class ClientHandler extends Thread
      {
            
            public void run()
            {
                  String received;
                  Socket client2;


                  do
                  {
                        received = input.nextLine();

                        for(int i = 0; i <= AssignmentServer.clientSocket.size()-1; i++)
                        {
                              try
                              {
                                    client2 = AssignmentServer.clientSocket.elementAt(i);
                                    System.out.println("#1 " + client2);
                                    PrintWriter output = new PrintWriter(client2.getOutputStream(),true);
                                    //output = new PrintWriter(client2.getOutputStream(),true);
                                    output.println(received);
                                    System.out.println(received);
                              }
                              catch(IOException e)
                              {
                                    System.err.println(e);
                              }
                        }

                  }while (!received.equals("QUIT"));

                  try
                  {
                        System.out.println("Closing down connection...");
                        client.close();
                        for (int x = 0; x <= AssignmentServer.clientSocket.size()-1; x++)
                        {
                              Socket socketIP = AssignmentServer.clientSocket.get(x);

                              if (socketIP.equals(client))
                              {
                                    AssignmentServer.clientSocket.removeElementAt(x);
                                    System.out.println("Client deleted");
                              }

                              System.out.println(AssignmentServer.clientSocket.elementAt(x));
                        }
                  }
                  catch(IOException e)
                  {
                        e.printStackTrace();

                  }

            }
      }

i'm just doing what our lecturer tells us,and from what i'm finding out so far he's not teaching us the best possible methods so far!

i think i understand what you mean,but once i receive the message from a client,how do i pass it out to all the clients?as i did that using the vector last time and going through each client in the vector

i've actually just managed to get it to work :-) when i was modifying the server a few weeks ago i moved some of the information from the clienthandler.i've just put it back in and it works so far *touch wood*.i've also took your advice on board,and even though i've still done the method different to what you recommend,i've implemented the never ending for loop.thanks alot for your help :-) the code now looks like the following:

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

public class AssignmentServerNew
{
      private static InetAddress host;
      private static ServerSocket servSocket;
      private static final int PORT = 1234;
      private      static String text = "";
      private static Vector<Socket> clientName = new Vector<Socket>();
      private static Vector<Socket> clientSocket = new Vector<Socket>();


      public static void main(String[] args) throws IOException
      {
            try
            {
                  servSocket = new ServerSocket(PORT);
            }
            catch (IOException e)
            {
                  System.out.println("\nUnable to set up port!");
                  System.exit(1);
            }

            for(;;)
            {
                  System.out.println("**************** SERVER RUNNING ****************");
                  Socket client = servSocket.accept(); //Wait for client.
                  host = client.getInetAddress();
                  System.out.println("\nNew client accepted with IP Address of" + host);
                  ClientHandler handler = new ClientHandler(client);
                  handler.start();
            }

      }

      public static class ClientHandler extends Thread
      {
            private Socket client;
            private Scanner input;
            private PrintWriter output;

            public ClientHandler(Socket socket) throws IOException
            {
                  client = socket;
                  String clientUsername;
                  clientSocket.add(client);
                  input = new Scanner(client.getInputStream());
                  clientUsername = input.nextLine();
                  System.out.println(clientUsername);
            }

            public void run()
            {
                  String received;
                  Socket client2;

                  do
                  {
                        received = input.nextLine();
                        System.out.println(received);

                        for(int i = 0; i <= AssignmentServerNew.clientSocket.size()-1; i++)
                        {
                              try
                              {
                                    client2 = AssignmentServerNew.clientSocket.elementAt(i);
                                    PrintWriter output = new PrintWriter(client2.getOutputStream(),true);
                                    output.println(received);

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

                  }while (!received.equals("QUIT"));

                  try
                  {
                        System.out.println("Closing down connection...");
                        client.close();
                        for (int x = 0; x <= AssignmentServerNew.clientSocket.size()-1; x++)
                        {
                              Socket socketIP = AssignmentServerNew.clientSocket.get(x);

                              if (socketIP.equals(client))
                              {
                                    AssignmentServerNew.clientSocket.removeElementAt(x);
                                    System.out.println("Client deleted");
                              }

                              System.out.println(AssignmentServerNew.clientSocket.elementAt(x));
                        }
                  }
                  catch(IOException e)
                  {
                        e.printStackTrace();

                  }

            }

      }
}