Exception!

[rameshraj]

java.io.StreamCorruptedException: invalid stream header: 456E7465
java.io.StreamCorruptedException: invalid stream header: 49

I got the above two exceptions when I run my chat application.When the client sends the message then the above two exceptions come and the applications stops to respond.
I have three classes:ChatBoard.java which lists the sample users.ChatSingle.java is the single thread of communication between the server and the client.
The MultiThreadChatServer does the working of the server.Here are the codes:

>>>>>>>>>>>>>>>>>>ChatBoard.java:

public class ChatBoard extends javax.swing.JFrame {

/** Creates new form ChatBoard */
public ChatBoard() {
setBounds(300,300,500,500);
setTitle("DAS Chat System");
initComponents();
}

/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {

jPanel1 = new javax.swing.JPanel();
jScrollPane2 = new javax.swing.JScrollPane();
listOnlineUsers = new javax.swing.JList();
jScrollPane1 = new javax.swing.JScrollPane();
taCollectedMsg = new javax.swing.JTextArea();
jPanel2 = new javax.swing.JPanel();
tfMsg = new javax.swing.JTextField();
btnSendMsg = new javax.swing.JButton();

setDefaultCloseOperation(javax.swing.WindowConstan ts.EXIT_ON_CLOSE);
setBounds(new java.awt.Rectangle(300, 300, 300, 300));

listOnlineUsers.setModel(new javax.swing.AbstractListModel() {
String[] strings = onlineUsers;
public int getSize() { return strings.length; }
public Object getElementAt(int i) { return strings[i]; }
});
listOnlineUsers.setToolTipText("Another ip is 192.168.2.75");
listOnlineUsers.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
listOnlineUsersMouseClicked(evt);
}
});
jScrollPane2.setViewportView(listOnlineUsers);

taCollectedMsg.setColumns(20);
taCollectedMsg.setRows(5);
jScrollPane1.setViewportView(taCollectedMsg);

javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.Grou pLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 326, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.Component Placement.RELATED, 31, Short.MAX_VALUE)
.addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 219, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap())
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.Grou pLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax. swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 154, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 87, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(16, Short.MAX_VALUE))
);

btnSendMsg.setText("SEND");
btnSendMsg.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnSendMsgActionPerformed(evt);
}
});

javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
jPanel2.setLayout(jPanel2Layout);
jPanel2Layout.setHorizontalGroup(
jPanel2Layout.createParallelGroup(javax.swing.Grou pLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addGroup(jPanel2Layout.createParallelGroup(javax. swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addContainerGap()
.addComponent(tfMsg, javax.swing.GroupLayout.PREFERRED_SIZE, 310, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(jPanel2Layout.createSequentialGroup()
.addGap(27, 27, 27)
.addComponent(btnSendMsg)))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_S IZE, Short.MAX_VALUE))
);
jPanel2Layout.setVerticalGroup(
jPanel2Layout.createParallelGroup(javax.swing.Grou pLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addContainerGap()
.addComponent(tfMsg, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.Component Placement.RELATED, 26, Short.MAX_VALUE)
.addComponent(btnSendMsg))
);

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout .Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(10, 10, 10)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGroup(layout.createSequentialGroup()
.addGap(20, 20, 20)
.addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout .Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(30, 30, 30)
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(30, 30, 30)
.addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
);

pack();
}// </editor-fold>

private void listOnlineUsersMouseClicked(java.awt.event.MouseEv ent evt) {

if(evt.getClickCount()==2)
{
String value=listOnlineUsers.getSelectedValue().toString( );
System.out.println("Selected user is\t"+value+"and port is\t"+port);
chatSingle=new ChatSingle(value, port);
chatSingle.setVisible(true);



}
}

private void btnSendMsgActionPerformed(java.awt.event.ActionEve nt evt) {
MultiThreadChatClient chatClient=new MultiThreadChatClient("localhost",12345);
chatClient.setMsg(tfMsg.getText());
chatClient.setCollectMsg(taCollectedMsg.getText(). concat("\n"+tfMsg.getText()));

taCollectedMsg.setText(taCollectedMsg.getText().co ncat("\n"+tfMsg.getText()));
tfMsg.setText("");
//chatClient.runClient();

}

/**
* @param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new ChatBoard().setVisible(true);
//chatServer=new MultiThreadChatServer();
//chatServer.runServer();

}
});
}

// Variables declaration - do not modify
private javax.swing.JButton btnSendMsg;
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel2;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JScrollPane jScrollPane2;
private javax.swing.JList listOnlineUsers;
private javax.swing.JTextArea taCollectedMsg;
private javax.swing.JTextField tfMsg;
// End of variables declaration
private String []onlineUsers={"192.168.2.23","192.168.2.75","127.0. 0.1","localhost"};
private static MultiThreadChatClient chatClient;
private static MultiThreadChatServer chatServer;
private String host="";
private int port=12345;
private ChatSingle chatSingle;
}


>>>>>>>>>>>>>>>>>>>>>>>ChatSingle.java:
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
/*
* ChatSingle.java
*
* Created on May 5, 2008, 12:11 PM
*/

package attendance.MultithreadChat;

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.PrintStream;
import java.net.Socket;
import java.net.UnknownHostException;

/**
*
* @author ramesh
*/
public class ChatSingle extends javax.swing.JFrame {
private String host;

/** Creates new form ChatSingle */
public ChatSingle(String host,int port) {
this.hostName=host;
this.port=port;
setBounds(200,200,300, 300);

initComponents();
}

/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {

jPanel1 = new javax.swing.JPanel();
jScrollPane1 = new javax.swing.JScrollPane();
taCollectedMsg = new javax.swing.JTextArea();
jPanel2 = new javax.swing.JPanel();
tfMsg = new javax.swing.JTextField();
btnSendMsg = new javax.swing.JButton();
jMenuBar1 = new javax.swing.JMenuBar();
jMenu1 = new javax.swing.JMenu();
jMenuItem1 = new javax.swing.JMenuItem();
jMenuItem2 = new javax.swing.JMenuItem();
jMenu2 = new javax.swing.JMenu();
jMenu3 = new javax.swing.JMenu();
jMenuItem3 = new javax.swing.JMenuItem();
jMenuItem4 = new javax.swing.JMenuItem();
jMenuItem5 = new javax.swing.JMenuItem();

setDefaultCloseOperation(javax.swing.WindowConstan ts.DISPOSE_ON_CLOSE);

taCollectedMsg.setColumns(20);
taCollectedMsg.setRows(5);
jScrollPane1.setViewportView(taCollectedMsg);

javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.Grou pLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap(javax.swing.GroupLayout.DEFAULT_S IZE, Short.MAX_VALUE)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 490, javax.swing.GroupLayout.PREFERRED_SIZE))
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.Grou pLayout.Alignment.LEADING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 167, Short.MAX_VALUE)
);

tfMsg.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
tfMsgActionPerformed(evt);
}
});

btnSendMsg.setText("SEND");
btnSendMsg.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnSendMsgActionPerformed(evt);
}
});

javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
jPanel2.setLayout(jPanel2Layout);
jPanel2Layout.setHorizontalGroup(
jPanel2Layout.createParallelGroup(javax.swing.Grou pLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addGroup(jPanel2Layout.createParallelGroup(javax. swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addContainerGap()
.addComponent(tfMsg, javax.swing.GroupLayout.DEFAULT_SIZE, 489, Short.MAX_VALUE))
.addGroup(jPanel2Layout.createSequentialGroup()
.addGap(18, 18, 18)
.addComponent(btnSendMsg)))
.addContainerGap())
);
jPanel2Layout.setVerticalGroup(
jPanel2Layout.createParallelGroup(javax.swing.Grou pLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addContainerGap()
.addComponent(tfMsg, javax.swing.GroupLayout.PREFERRED_SIZE, 38, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.Component Placement.RELATED, 28, Short.MAX_VALUE)
.addComponent(btnSendMsg))
);

jMenu1.setText("File");

jMenuItem1.setText("Save Logs");
jMenu1.add(jMenuItem1);

jMenuItem2.setText("Exit");
jMenu1.add(jMenuItem2);

jMenuBar1.add(jMenu1);

jMenu2.setText("Edit");

jMenu3.setText("Font");

jMenuItem3.setText("Size");
jMenu3.add(jMenuItem3);

jMenuItem4.setText("Color");
jMenu3.add(jMenuItem4);

jMenuItem5.setText("Type");
jMenu3.add(jMenuItem5);

jMenu2.add(jMenu3);

jMenuBar1.add(jMenu2);

setJMenuBar(jMenuBar1);

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout .Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.G roupLayout.Alignment.LEADING)
.addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(31, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout .Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(27, 27, 27)
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(16, Short.MAX_VALUE))
);

pack();
}// </editor-fold>

private void tfMsgActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}

private void btnSendMsgActionPerformed(java.awt.event.ActionEve nt evt) {

this.message=tfMsg.getText();
this.collectedMsg=taCollectedMsg.getText()+"\nMe:\ t"+tfMsg.getText();
taCollectedMsg.setText(collectedMsg);
tfMsg.setText("");
// Try to open a socket on a given host and port
// Try to open input and output streams
try {
clientSocket = new Socket(hostName,port);
//inputLine = new BufferedReader(new InputStreamReader(System.in));
//os = new PrintStream(clientSocket.getOutputStream());
//is = new DataInputStream(clientSocket.getInputStream());
System.out.println("inside1");
oos=new ObjectOutputStream(clientSocket.getOutputStream()) ;
System.out.println("inside2");
oos.writeBytes("Hi there");
oos.flush();
ois=new ObjectInputStream(clientSocket.getInputStream());
//oos.writeBytes(tfMsg.getText());
System.out.println("client got\t"+ois.readLine().toString());

} catch (UnknownHostException e) {
System.err.println("Don't know about host "+hostName);
}
catch (IOException e)
{
System.err.println("Couldn't get I/O for the connection to the host "+hostName+"\t"+e);
}
if (clientSocket != null && os != null && is != null) {
try {

// Create a thread to read from the server
//new Thread(new MultiThreadChatClient(hostName,port)).start();

while (!closed) {
os.println(tfMsg.getText());
}

// Clean up:
// close the output stream
// close the input stream
// close the socket

//os.close();
//is.close();
//clientSocket.close();
} catch (Exception e) {
System.err.println("Exception: " + e);
}
}
}

/**
* @param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new ChatSingle("locahost",12345).setVisible(true);
}
});
}

// Variables declaration - do not modify
private javax.swing.JButton btnSendMsg;
private javax.swing.JMenu jMenu1;
private javax.swing.JMenu jMenu2;
private javax.swing.JMenu jMenu3;
private javax.swing.JMenuBar jMenuBar1;
private javax.swing.JMenuItem jMenuItem1;
private javax.swing.JMenuItem jMenuItem2;
private javax.swing.JMenuItem jMenuItem3;
private javax.swing.JMenuItem jMenuItem4;
private javax.swing.JMenuItem jMenuItem5;
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel2;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTextArea taCollectedMsg;
private javax.swing.JTextField tfMsg;
// End of variables declaration
private static String hostName="";
private static int port=12345;
private static String message="";
private static String collectedMsg="";
private static MultiThreadChatClient chatClient;
private static MultiThreadChatServer chatServer;
static Socket clientSocket = null;
static PrintStream os = null;
static DataInputStream is = null;
static BufferedReader inputLine = null;
static boolean closed = false;
private static ObjectInputStream ois;
private static ObjectOutputStream oos;
}

>>>>>>>>>>>>>>>>>>>>>>>>>>>MultiThreadChatServer.j ava
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package attendance.MultithreadChat;

/**
*
* @author ramesh
*/
import java.io.*;
import java.net.*;

public class MultiThreadChatServer{

// Declaration section:
// declare a server socket and a client socket for the server
// declare an input and an output stream

static Socket clientSocket = null;
static ServerSocket serverSocket = null;
private static ObjectInputStream objectInput;
private static ObjectOutputStream objectOutput;

// This chat server can accept up to 2 clients' connections

static clientThread t[] = new clientThread[10];

public static void main(String args[]) {

// The default port
int port_number=12345;
try {
serverSocket = new ServerSocket(port_number);
}
catch (IOException e)
{System.out.println("Exception1 in main in server"+e);}

// Create a socket object from the ServerSocket to listen and accept
// connections.
// Open input and output streams for this socket will be created in
// client's thread since every client is served by the server in
// an individual thread

while(true){

try {
clientSocket = serverSocket.accept();
for(int i=0; i<=9; i++){
if(t[i]==null)
{
(
t[i] = new clientThread(clientSocket,t)).start();
break;
}

}
//System.out.println("Hello u are welcome\t"+t[0].activeCount()+clientSocket.getInetAddress());
DataInputStream is = null;
PrintStream os = null;//alternatively dataoutput stream
is = new DataInputStream(clientSocket.getInputStream());
os = new PrintStream(clientSocket.getOutputStream());

objectOutput=new ObjectOutputStream(clientSocket.getOutputStream()) ;
os.println("Hello Client\t"+clientSocket.getInetAddress());
objectOutput.writeBytes("hello client");
objectOutput.flush();
objectInput=new ObjectInputStream(clientSocket.getInputStream());
System.out.println("Client has sent:"+objectInput.readChar());
for(int i=0;i<t[0].activeCount();i++)
{
System.out.println("Name of thread \t"+t[i].getName()+t[i].getId());


}

}
catch (IOException e) {
System.out.println("Exception2 in server"+e);}
catch(Exception ex)
{
System.out.println("Exception3 in server"+ex);
}
}
}
public void runServer()
{
// The default port
int port_number=12345;
try {
serverSocket = new ServerSocket(port_number);
}
catch (IOException e)
{System.out.println("Exception1 in runServer\t"+e);}

// Create a socket object from the ServerSocket to listen and accept
// connections.
// Open input and output streams for this socket will be created in
// client's thread since every client is served by the server in
// an individual thread

while(true){

try {
clientSocket = serverSocket.accept();
for(int i=0; i<=9; i++){
if(t[i]==null)
{
(
t[i] = new clientThread(clientSocket,t)).start();
break;
}

}
//System.out.println("Hello u are welcome\t"+t[0].activeCount()+clientSocket.getInetAddress());
DataInputStream is = null;
PrintStream os = null;//alternatively dataoutput stream
is = new DataInputStream(clientSocket.getInputStream());
os = new PrintStream(clientSocket.getOutputStream());
os.println("Hello Client\t"+clientSocket.getInetAddress());
for(int i=0;i<t[0].activeCount();i++)
{
System.out.println("Name of thread \t"+t[i].getName()+t[i].getId());


}

}
catch (IOException e) {
System.out.println("Exception2 in runServer\t"+e);}
catch(Exception ex)
{
System.out.println("Exception3 in runServer\t"+ex);
}
}
}
}

// This client thread opens the input and the output streams for a particular client,
// ask the client's name, informs all the clients currently connected to the
// server about the fact that a new client has joined the chat room,
// and as long as it receive data, echos that data back to all other clients.
// When the client leaves the chat room this thread informs also all the
// clients about that and terminates.

class clientThread extends Thread{

DataInputStream is = null;
PrintStream os = null;//alternatively dataoutput stream
Socket clientSocket = null;
clientThread t[];
ObjectInputStream objectInputStream;
ObjectOutputStream objectOutputStream;

public clientThread(Socket clientSocket, clientThread[] t){
this.clientSocket=clientSocket;
this.t=t;
}

public void run()
{
String line;
String name;
try{
is = new DataInputStream(clientSocket.getInputStream());
os = new PrintStream(clientSocket.getOutputStream());
os.println("Enter your name.");

name = is.readLine();
os.println("Hello "+name+" Welcome to our chat room.\nTo leave enter /quit in a new line");
objectOutputStream=new ObjectOutputStream(clientSocket.getOutputStream()) ;
objectOutputStream.writeBytes("This is me server");
objectOutputStream.flush();
objectInputStream=new ObjectInputStream(clientSocket.getInputStream());
System.out.println("Client sent:"+objectInputStream.readLine());
//this is the multicast message sent by the server to all of the clients
for(int i=0; i<=9; i++)
if (t[i]!=null && t[i]!=this)
t[i].os.println("*** A new user "+name+" entered the chat room !!! ***" );
while (true) {
line = is.readLine();
System.out.println("to me:\t"+line+"from\t"+currentThread().getName()+"\t "+currentThread().getId());
int id=Integer.parseInt(currentThread().getName().spli t("-")[1]);
t[id].os.println("U were the current thread");
if(line.startsWith("/quit")) break;
for(int i=0; i<=9; i++)
if (t[i]!=null) t[i].os.println("<"+name+"> "+line);
}
for(int i=0; i<=9; i++)
if (t[i]!=null && t[i]!=this)
t[i].os.println("*** The user "+name+" is leaving the chat room !!! ***" );

os.println
("*** Bye "+name+" ***");

// Clean up:
// Set to null the current thread variable such that other client could
// be accepted by the server
for(int i=0; i<=9; i++)
if (t[i]==this) t[i]=null;
// close the output stream
// close the input stream
// close the socket
is.close();
os.close();
clientSocket.close();
}
catch(IOException e){
System.out.println("IOExcep in run of server"+e);
}
catch(NullPointerException npe)
{
System.out.println("NPE in server's run\t"+npe);
}
}

}

[rameshraj]

While running run the server program first and then the ChatBoard.java.