Events missing in JTable

Question

In my application one of the table columns is boolean.Table is displaying checkboxex for that column.That is good.when i click check box i want to take table's other column value which is integer ,sum it to other vale and display that value in jlabel. This functionality is working great as long as i click checkboxe slowly.
But problem is when i click checkboxex very fast events getting missed and label value is not updating.I tried to synchronize code but it doesn't work.
help is greatly appreciated
thanks in advance

Answer 1

thanks for your reply.
i tried to create runnable in setvalueat method of my table model.iam new to threads.i might be doing something wrong.
here iam attaching same class that iam experimenting.
any help really appreciated.
i have deadline by friday
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
import javax.swing.JScrollPane;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
import javax.swing.JOptionPane;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
import java.awt.geom.*;
import java.awt.Dimension;
import java.text.*;
import javax.swing.event.TableModelListener;
import javax.swing.event.TableModelEvent;
import javax.swing.table.*;
public class TableSorterDemo extends JFrame {
private boolean DEBUG = true;
JTable table;
JLabel label=new JLabel();
public TableSorterDemo() {
super("TableSorterDemo");
MyTableModel myModel = new MyTableModel();
//TableSorter sorter = new TableSorter(myModel); //ADDED THIS
//JTable table = new JTable(myModel); //OLD
//JTable table = new JTable(sorter); //NEW
//table = new JTable(sorter);
table = new JTable();
table.setModel(myModel);
myModel.addTableModelListener(myModel);
//sorter.addMouseListenerToHeaderInTable(table); //ADDED THIS
table.setPreferredScrollableViewportSize(new Dimension(500, 70));
table.setSelectionMode(0);
//Create the scroll pane and add the table to it.
JScrollPane scrollPane = new JScrollPane(table);
//JLabel label=new JLabel();
label.setText("0");
//Add the scroll pane to this window.
getContentPane().add(scrollPane, BorderLayout.CENTER);
getContentPane().add(label, BorderLayout.SOUTH);
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
public void run(){
class MyTableModel extends AbstractTableModel implements TableModelListener {
final String[] columnNames = {"First Name",
"Last Name",
"Sport",
"# of Years",
"Vegetarian"};
final Object[][] data = {
{"Mary", "Campione",
"Snowboarding", "10", new Boolean(false)},
{"Alison", "Huml",
"Rowing", "20", new Boolean(false)},
{"Kathy", "Walrath",
"Chasing toddlers", "50", new Boolean(false)},
{"Mark", "Andrews",
"Speed reading", "60", new Boolean(false)},
{"Angela", "Lih",
"Teaching high school", "10", new Boolean(false)}
public int getColumnCount() {
return columnNames.length;
public int getRowCount() {
return data.length;
public String getColumnName(int col) {
return columnNames[col];
public Object getValueAt(int row, int col) {
return data[row][col];
* JTable uses this method to determine the default renderer/
* editor for each cell. If we didn't implement this method,
* then the last column would contain text ("true"/"false"),
* rather than a check box.
public Class getColumnClass(int c) {
return getValueAt(0, c).getClass();
* Don't need to implement this method unless your table's
* editable.
public boolean isCellEditable(int row, int col) {
//Note that the data/cell address is constant,
//no matter where the cell appears onscreen.
if (col < 2) {
return false;
} else {
return true;
public void tableChanged(TableModelEvent e){
//final TableModelEvent e1=e;
//Runnable setSearchStatusLabel = new Runnable() {
//public void run() {
//AddSum(e.getFirstRow(),e.getColumn(),(table.getValueAt(e.getFirstRow(),e.getColumn())).toString());
//SwingUtilities.invokeLater(setSearchStatusLabel);
//System.out.println(e.getFirstRow());
//System.out.println(e.getColumn());
//System.out.println(table.getValueAt(e.getFirstRow(),e.getColumn()));
* Don't need to implement this method unless your table's
* data can change.
public synchronized void setValueAt(Object value, int row, int col) {
/*if (DEBUG) {
System.out.println("Setting value at " + row + "," + col
+ " to " + value
+ " (an instance of "
+ value.getClass() + ")");
final int row1=row;
final int col=col1;
final String value1=value;
Runnable setSearchStatusLabel = new Runnable() {
public void run() {
AddSum(row1,col1,value1);
/*int labelval=StringToInt(label.getText());
int newlabelval;
int tablesumval;
if(value1.equalsIgnoreCase("true")){
tablesumval=StringToInt((String)(table.getValueAt(row1,col1-1)));
//tablesumval=Integer.parseInt((String)(getScrollPaneTableLocHitRecords().getValueAt(selectedRow,13)));
newlabelval=labelval+tablesumval;
//String test=IntToCurrencyString(newlabelval);
label.setText(IntToString(newlabelval));
else{
tablesumval=StringToInt((String)(table.getValueAt(row1,col1-1)));
if(labelval==0){
newlabelval=tablesumval;
else{
newlabelval=labelval-tablesumval;
label.setText(IntToString(newlabelval));
//SwingUtilities.invokeLater(setSearchStatusLabel);
if (data[0][col] instanceof Integer
&& !(value instanceof Integer)) {
//With JFC/Swing 1.1 and JDK 1.2, we need to create
//an Integer from the value; otherwise, the column
//switches to contain Strings. Starting with v 1.3,
//the table automatically converts value to an Integer,
//so you only need the code in the 'else' part of this
//'if' block.
try {
data[row][col] = new Integer(value.toString());
fireTableCellUpdated(row, col);
} catch (NumberFormatException e) {
JOptionPane.showMessageDialog(TableSorterDemo.this,
"The \"" + getColumnName(col)
+ "\" column accepts only integer values.");
} else {
data[row][col] = value;
fireTableCellUpdated(row, col);
if (DEBUG) {
System.out.println("New value of data:");
printDebugData();
private void printDebugData() {
int numRows = getRowCount();
int numCols = getColumnCount();
for (int i=0; i < numRows; i++) {
System.out.print(" row " + i + ":");
for (int j=0; j < numCols; j++) {
System.out.print(" " + data[i][j]);
System.out.println();
System.out.println("--------------------------");
public static void main(String[] args) {
TableSorterDemo frame = new TableSorterDemo();
frame.pack();
frame.setBounds(100,100,500,150);
frame.setVisible(true);
private String IntToString(int val) {
     NumberFormat formatter = NumberFormat.getInstance();
     formatter.setMaximumFractionDigits(0);
     String result=formatter.format(val);
     return result;
private int StringToInt(String val) {
     NumberFormat formatter = NumberFormat.getInstance();
     formatter.setMaximumFractionDigits(0);
     //formatter.setGroupingUsed(false);
     Number numberValue=null;
     try{
          numberValue = formatter.parse(val);
     catch(ParseException e){};
     //return 3;
     return numberValue.intValue();
//private synchronized void AddSum( int row1,int col1,String value1){
private synchronized void AddSum(int row1,int col1,String value1){
int labelval=StringToInt(label.getText());
int newlabelval;
int tablesumval;
if(value1.equalsIgnoreCase("true")){
tablesumval=StringToInt((String)(table.getValueAt(row1,col1-1)));
//tablesumval=Integer.parseInt((String)(getScrollPaneTableLocHitRecords().getValueAt(selectedRow,13)));
newlabelval=labelval+tablesumval;
//String test=IntToCurrencyString(newlabelval);
label.setText(IntToString(newlabelval));
else{
tablesumval=StringToInt((String)(table.getValueAt(row1,col1-1)));
if(labelval==0){
newlabelval=tablesumval;
else{
newlabelval=labelval-tablesumval;
label.setText(IntToString(newlabelval));