JDBC TableModel problem with setValueAt

Question

Hello to everyone. I have problem when I change value at cell in Table. My model makes update in DB, but in GUI the change is not visible. The change gets visible only when I reopen the Table.
public class CustomTableModel extends AbstractTableModel implements Serializable
    int                  dateTime = Types.DATE;
    Connection                con = null;
    ResultSet                  rs = null;
    ResultSetMetaData  rsMetaData = null;
    int                numColumns;
    String[]          columnNames = null;
    boolean           isUpdatable;
    Vector                   rows = new Vector();
    public CustomTableModel(Connection connect, ResultSet rset, String[] strl )
     try
         con = connect;
      String[] sNames = strl;
         rs = rset;
         rsMetaData = rs.getMetaData();
         numColumns = rsMetaData.getColumnCount();
         columnNames = new String[numColumns];
      int rowIndex;
      int columnIndex;
       if (rs.getConcurrency() == ResultSet.CONCUR_UPDATABLE)
          isUpdatable = true;
         else
          isUpdatable = false;
         for (int i = 0; i < numColumns; i++)
    if (sNames==null){
          columnNames[i] = rsMetaData.getColumnLabel(i+1);
    else
      columnNames = sNames;
         while(rs.next())
          Vector tempRow = new Vector(numColumns);
          for (int i = 0; i < numColumns; i++)
              switch(rsMetaData.getColumnType(i+1))
              .............. TYPES....
         } // end for loop
          rows.add(tempRow);
         } // end while loop
     }My method setValueAt
public void setValueAt(Object aValue, int rowIndex, int columnIndex)
     try
        Object oldValue = getValueAt(rowIndex,columnIndex);
         if (oldValue == null && aValue == null)
          return;
         // can use equals() only if oldValue is not null
         if (oldValue != null)
          if (oldValue.equals(aValue))
              return;
         // JTable is 0 based while ResultSet is 1 based
         rs.absolute(rowIndex+1);
         updateResultSet(rs, aValue, rowIndex, columnIndex);
         rs.updateRow();
         con.commit();
         Vector aRow = (Vector)rows.elementAt(rowIndex);
            aRow.setElementAt(aValue, columnIndex);
       fireTableCellUpdated(rowIndex, columnIndex);
     catch (SQLException ex)
         ExceptionEvent event = new ExceptionEvent(this, ex.getMessage());
         fireExceptionGenerated(event);
         try
          con.rollback();
         catch (SQLException ex2)
          event = new ExceptionEvent(this, ex2.getMessage());
          fireExceptionGenerated(event);
     catch (Exception ex)
         ExceptionEvent event = new ExceptionEvent(this, ex.getMessage());
         fireExceptionGenerated(event);
    }Thanks in advance.

Answer 1

import java.io.*;
import java.sql.*;
import java.text.*;
import java.util.*;
import javax.swing.*;
import javax.swing.table.*;
public class TableModelDemo extends javax.swing.JFrame {
    public TableModelDemo() {
        initComponents();
        connectDatabase();
        CustomTableModel model = new CustomTableModel();
        model.init(conn,rs,null);
        jTable1.setModel(model);
    private void connectDatabase(){
        try{
            DriverManager.registerDriver(new com.sybase.jdbc2.jdbc.SybDriver());
        }catch (Exception ex){
            ex.printStackTrace();
        conn=null;
        try{
            conn = DriverManager.getConnection("jdbc:sybase:Tds:prdfs4:2638","dba","sql");
        }catch (Exception ex){
            System.out.println("Connection refused");
        try {
            if(conn!=null){
                Statement stmt = conn.createStatement();
                String query ="SELECT ANA_LED_BASE_FORGN_CURY, ANA_AXIS_CODE, ANA_ACC_NUM, ANA_LED_TXT FROM ana_ledger " +
                        "where CMPY_CODE='06-LV   ' and JRNL_CODE='SFA  ' and ANA_LED_DOC_NUM=0008170";
                rs = stmt.executeQuery(query);
        } catch (SQLException sqe) {
            String message = sqe.getMessage();
            JOptionPane.showMessageDialog( null, message );
    private void initComponents() {
        jScrollPane1 = new javax.swing.JScrollPane();
        jTable1 = new javax.swing.JTable();
        jToolBar1 = new javax.swing.JToolBar();
        jButton1 = new javax.swing.JButton();
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("change value at cell in Table");
        jScrollPane1.setViewportView(jTable1);
        getContentPane().add(jScrollPane1, java.awt.BorderLayout.CENTER);
        jToolBar1.setFloatable(false);
        jButton1.setText("change value at cell in Table");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
        jToolBar1.add(jButton1);
        getContentPane().add(jToolBar1, java.awt.BorderLayout.NORTH);
        java.awt.Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
        setBounds((screenSize.width-790)/2, (screenSize.height-327)/2, 790, 327);
    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
        String val = JOptionPane.showInputDialog("change value at cell in Table","TEST,1,1");
        String val2[] = val.split(",");
        jTable1.setValueAt( val2[0],Integer.parseInt(val2[1]),Integer.parseInt(val2[2]) );
    public static void main(String args[]) {
                new TableModelDemo().setVisible(true);
    private javax.swing.JButton jButton1;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTable jTable1;
    private javax.swing.JToolBar jToolBar1;
    private ResultSet rs ;
    private Connection conn;
class CustomTableModel extends DefaultTableModel implements Serializable {
    int                  dateTime = Types.DATE;
    Connection                con = null;
    ResultSet                  rs = null;
    ResultSetMetaData  rsMetaData = null;
    int                numColumns;
    String[]          columnNames = null;
    boolean           isUpdatable;
    Vector                   rows = new Vector();
    public void init(Connection connectToDatabase, ResultSet rset, String[] strl ) {
        try {
            con = connectToDatabase;
            String[] sNames = strl;
            rs = rset;
            rsMetaData = rs.getMetaData();
            numColumns = rsMetaData.getColumnCount();
            columnNames = new String[numColumns];
            int rowIndex=0;
            int columnIndex;
            if (rs.getConcurrency() == ResultSet.CONCUR_UPDATABLE) {
                isUpdatable = true;
            } else {
                isUpdatable = false;
            for (int i = 0; i < numColumns; i++) {
                if (sNames==null){
                    columnNames[i] = rsMetaData.getColumnLabel(i+1);
                } else {
                    columnNames = sNames;
            while(rs.next()) {
                Object[] rowData = new Object[numColumns];
                addRow( rowData );
                Vector tempRow = new Vector(numColumns);
                for (int i = 0; i < numColumns; i++) {
                    if( rowIndex==0 ){
                        addColumn( columnNames[i] );
                    setValueAt( rs.getString(i+1), rowIndex, i );
                    //                    switch(rsMetaData.getColumnType(i+1))
                    //                    .............. TYPES....
                } // end for loop
                rows.add(tempRow);
                rowIndex++;
            } // end while loop
        }catch(Exception ex){
            ex.printStackTrace();
    public void setValueAt(Object aValue, int rowIndex, int columnIndex) {
        super.setValueAt( aValue, rowIndex, columnIndex );
        try {
            Object oldValue = getValueAt(rowIndex,columnIndex);
            if (oldValue == null && aValue == null) {
                return;
            // can use equals() only if oldValue is not null
            if (oldValue != null) {
                if (oldValue.equals(aValue)) {
                    return;
            // JTable is 0 based while ResultSet is 1 based
            //            rs.absolute(rowIndex+1);
            //            updateResultSet(rs, aValue, rowIndex, columnIndex);
            //            rs.updateRow();
            //            con.commit();
            //        Vector aRow = (Vector)rows.elementAt(rowIndex);
            //        aRow.setElementAt(aValue, columnIndex);
            //            fireTableCellUpdated(rowIndex, columnIndex);
            //        } catch (SQLException ex) {
            //            ExceptionEvent event = new ExceptionEvent(this, ex.getMessage());
            //            fireExceptionGenerated(event);
            //            try {
            //                con.rollback();
            //            } catch (SQLException ex2) {
            //                event = new ExceptionEvent(this, ex2.getMessage());
            //                fireExceptionGenerated(event);
        } catch (Exception ex) {
            //                    ExceptionEvent event = new ExceptionEvent(this, ex.getMessage());
            //                    fireExceptionGenerated(event);
}