JTable in Swing

Question

hi,
Good Morning,
I am using NetBeans and MS-Access to develop a simple project.
I am using JTable to store all the records from my MS-Access Database.
When I run the project all the records are stored in JTable .No Problem.
But when I insert new records ,they are not added to the JTable.But when I run the project again the recently inserted records are stored in the JTable.
Need I refresh my table?
Is any method to refresh?
or chance of any mistake in my coding?

Answer 1

hi,
Thank you so much for your reply.
My coding is below.But I didnot use the method of model.addRow().I am using
jTable m_table = new JTable();
m_table.addColumn(column);
column is created by me and i am using DefaultTableCellRenderer .Because I am new to java I donot know how to implement your reply in my coding.So please help me to solve.
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.sql.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
public class ss extends JFrame
protected JTable m_table;
protected StockTableData m_data;
protected JLabel m_title;
public ss()
super("Stocks Table");
setSize(600, 340);
m_data = new StockTableData();
getContentPane().add(m_title, BorderLayout.NORTH);
m_table = new JTable();
m_table.setAutoCreateColumnsFromModel(false);
m_table.setModel(m_data);
for (int k = 0; k < StockTableData.m_columns.length;k++) {
DefaultTableCellRenderer renderer = new DefaultTableCellRenderer();
renderer.setHorizontalAlignment(StockTableData.m_columns[k].m_alignment);
TableColumn column = new TableColumn(k, StockTableData.m_columns[k].m_width,renderer,null);
m_table.addColumn(column);
JTableHeader header = m_table.getTableHeader();
header.setUpdateTableInRealTime(false);
JScrollPane ps = new JScrollPane();
ps.getViewport().add(m_table);
getContentPane().add(ps,BorderLayout.CENTER);
WindowListener wndCloser = new WindowAdapter()
public void windowClosing(WindowEvent e)
System.exit(0);
addWindowListener(wndCloser);
setVisible(true);
public static void main(String argv[]) {
new StocksTable();
class StockData
public String m_code;
public String m_name;
public String m_ic;
public String m_address;
public String m_phone;
public StockData(String symbol,String name, String last, String open, String change)
m_code = symbol;
m_name = name;
m_ic = last;
m_address = open;
m_phone = change;
class ColumnData
public String m_title;
public int m_width;
public int m_alignment;
public ColumnData(
String title, int width,
int alignment)
m_title = title;
m_width = width;
m_alignment = alignment;
class StockTableData extends AbstractTableModel
static final public
ColumnData m_columns[] = {
new ColumnData(
"SCODE", 100, JLabel.LEFT ),
new ColumnData(
"NAME", 150, JLabel.LEFT ),
new ColumnData(
"IC", 100, JLabel.RIGHT ),
new ColumnData(
"ADDRESS", 100, JLabel.RIGHT ),
new ColumnData(
"PHONE", 100, JLabel.RIGHT ),
protected Vector m_vector;
public StockTableData() {
m_vector = new Vector();
setDefaultData();
public void setDefaultData() {
try {
m_vector.removeAllElements();
Connection con;
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String url = "jdbc:odbc:SERTS";
String user = "root";
String pw = "";
con = DriverManager.getConnection(url,user,pw);
Statement s = con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_UPDATABLE);
String tofirst="SELECT * from [Student-File]";
ResultSet results;
results = s.executeQuery(tofirst);
boolean hasData = false;
while (results.next())
if (!hasData)
m_vector.removeAllElements();
hasData = true;
String scode = results.getString(1);
String sname = results.getString(2);
String address = results.getString(3);
String ic = results.getString(4);
String phone = results.getString(5);
m_vector.addElement(new StockData(scode,sname,address,ic,phone));
results.close();
s.close();
con.close();
catch (ClassNotFoundException e)
System.out.println (e.getMessage());
System.exit(0);
catch (SQLException e)
System.out.println (e.getMessage());
System.exit(0);
public int getRowCount() {
return m_vector==null ? 0 : m_vector.size();
public int getColumnCount() {
return m_columns.length;
public String getColumnName(int column) {
return m_columns[column].m_title;
public boolean isCellEditable(int
nRow, int nCol) {
return false;
public Object getValueAt(int
nRow, int nCol) {
if (nRow < 0 || nRow
>= getRowCount())
return "";
StockData row =
(StockData)m_vector.elementAt(nRow);
switch (nCol) {
case 0: return row.m_code;
case 1: return row.m_name;
case 2: return row.m_ic;
case 3: return row.m_address;
case 4: return row.m_phone;
return "";
public String getTitle() {
return "Stock Quotes";
Thank you so much.