JTable Refreshing problem for continuous data from socket

Question

Hi there,
I am facing table refreshing problem. My table is filled with the data received from socket . The socket is receiving live data continuously. When ever data received by client socket, it notify table model to parse and refresh the data on specific row. The logic is working fine and data is refresh some time twice or some thrice, but then it seem like java table GUI is not refreshing. The data on client socket is continuously receiving but there is no refresh on table. I am confident on logic just because when ever I stop sending data from server, then client GUI refreshing it self with the data it received previous and buffered it.
I have applied all the available solutions:
i.e.
     - Used DefaultTableModel Class.
     - Created my own custem model class extend by AbstractTableModel.
     - Used SwingUtilities invokeLater and invokeAndWait methods.
     - Yield Stream Reader thread so, that GUI get time to refresh.
Please if any one has any idea/solution for this issue, help me out.
Here is the code.
Custom Data Model Class
package clients.tcp;
import java.util.*;
import javax.swing.table.*;
import javax.swing.*;
public class CustomModel extends DefaultTableModel implements Observer {
/** Creates a new instance of CustomModel */
public CustomModel() {
//super(columnNames,25);
String[] columnNames = {"Sno.","Symbol","BVol","Buy","Sale",
"SVol","Last","..","...","Total Vol...",
"..","High","..","Low","Change","Average","..."};
super.setColumnIdentifiers(columnNames);
super.setRowCount(25);
/*This method called by client socket when ever it recived data as line/record*/
public synchronized void update(Observable o, Object arg){
collectData(arg.toString());
/*This method used to parse, collect and notify table for new data arrival*/
public synchronized void collectData(String rec){              
String validSymbol="";
System.out.println("collectDataRecord :-"+rec);
StringTokenizer recToken=new StringTokenizer(rec," ");
Vector rowVector=new Vector();
for(int i=0;i<25;i++){
validSymbol=(String)getValueAt(0,1);
if(rec.indexOf(validSymbol) != -1){
for(int j=0;recToken.hasMoreTokens();j++){
super.setValueAt(recToken.nextToken(),i,j);
//break;
Client Socket Class
package clients.tcp;
import java.io.*;
import java.net.*;
import java.util.*;
import javax.swing.*;
public class DataReceiver extends Observable implements Runnable{
private Socket TCPConnection = null;
private BufferedReader br = null;
private String serverName = "Salahuddin";
private int serverPort = 5555;
public DataReceiver()
public void setServerName(String name){
this.serverName=name;
public void setServerPort(int port){
this.serverPort=port;
//03-20-04 12:30pm Method to open TCP/IP connection
public void openTCPConnection()
try
TCPConnection = new Socket(serverName, serverPort);
br = new BufferedReader(new InputStreamReader(
TCPConnection.getInputStream()));           
System.out.println("Connection open now....");
//System.out.println("value is: "+br.readLine());
}catch (UnknownHostException e){
System.err.println("Don't know about host: ");
}catch (IOException e){
System.err.println("Couldn't get I/O for "
+ "the connection to: ");
//03-20-04 12:30pm Method to receive the records
public String receiveData(){
String rec = null;
try
rec = br.readLine();          
catch(IOException ioe)
System.out.println("Error is: "+ioe);
ioe.printStackTrace(System.out);
catch(Exception ex)
System.out.println("Exception is: "+ex);
ex.printStackTrace(System.out);
return rec;     
public void run()
while(true)
String str=null;
str = receiveData();
if(str != null)
/*try{
final String finalstr=str;
Runnable updateTables = new Runnable() {
public void run() { */
notifyAllObservers(str);
SwingUtilities.invokeAndWait(updateTables);
}catch(Exception ex){
ex.printStackTrace(System.out);
System.out.println("Observer Notified...");*/
try{
Thread.sleep(200);
}catch(Exception e){
public synchronized void notifyAllObservers(String str){
try{
setChanged();
notifyObservers(str);
}catch(Exception e){
e.printStackTrace(System.out);
Regards,
Salahuddin Munshi.

Answer 1

use your code to post codes more easy to read, lyke this:
package clients.tcp;
import java.util.*;
import javax.swing.table.*;
import javax.swing.*;
public class CustomModel extends DefaultTableModel implements Observer {
/** Creates a new instance of CustomModel */
public CustomModel() {
//super(columnNames,25);
String[] columnNames = {"Sno.","Symbol","BVol","Buy","Sale",
"SVol","Last","..","...","Total Vol...",
"..","High","..","Low","Change","Average","..."};
super.setColumnIdentifiers(columnNames);
super.setRowCount(25);
/*This method called by client socket when ever it recived data as line/record*/
public synchronized void update(Observable o, Object arg){
collectData(arg.toString());
/*This method used to parse, collect and notify table for new data arrival*/
public synchronized void collectData(String rec){
String validSymbol="";
System.out.println("collectDataRecord :-"+rec);
StringTokenizer recToken=new StringTokenizer(rec," ");
Vector rowVector=new Vector();
for(int i=0;i<25;i++){
validSymbol=(String)getValueAt(0,1);
if(rec.indexOf(validSymbol) != -1){
for(int j=0;recToken.hasMoreTokens();j++){
super.setValueAt(recToken.nextToken(),i,j);
//break;
Client Socket Class