Jtable and database

hi,
i am using jdevlopper 10g and oracle 10g express.
i create a database and a new connection to it.
in the first frame, i created a new jtable and i want that it containts data from the database.
is any one can help me.
thanks

Hi,
you have two options:
- Use ADF and ADF Swing, in which cae the database connect is through a business service (e.g. ADF Business Components or EJB)
- Create a JDBC connection to the database and populate the JTable model with the data (which is cumbersome). You find tutorials on the web of how to do this.
Frank

Similar Messages

Problem about jtable and database

The problem is that when i clicked the button to save the values of textfields and text area, although the table is supposed to show the new list of datas from the db, it adds the new data list to the end of the first list. I have to list one old and one new in jtable.
* To change this template, choose Tools | Templates
* and open the template in the editor.
* DatabaseConnection.java
* Created on 28.Aðu.2008, 11:24:52
package databaseconnection;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Vector;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.TableModel;
* @author ARAGORN
public class DatabaseConnection extends javax.swing.JFrame {
 /** Creates new form DatabaseConnection */
 public DatabaseConnection() {
 try {
 Class.forName("com.mysql.jdbc.Driver");
 con = DriverManager.getConnection("jdbc:mysql://localhost:3306/Students", "admin", "1837837");
 st = con.createStatement();
 } catch (Exception e) {
 System.out.println("Database Connection Error!");
 try {
 ResultSet rs = st.executeQuery("SELECT*FROM studentdata");
 while (rs.next()) {
 Object[] rowValues = {rs.getInt(1),rs.getString(2),rs.getString(3),rs.getInt(4),rs.getString(5),rs.getString(6),rs.getInt(7)};
 row.addElement(rowValues);
 data = new Object[row.size()][7];
 for(int i=0;i<row.size();i++){
 data=(Object[]) row.get(i);
} catch (Exception e) {
System.out.println("reading error!");
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.
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jScrollPane1 = new javax.swing.JScrollPane();
jTable1 = new javax.swing.JTable();
jPanel1 = new javax.swing.JPanel();
jLabel1 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jSeparator1 = new javax.swing.JSeparator();
jLabel2 = new javax.swing.JLabel();
jTextField2 = new javax.swing.JTextField();
jLabel3 = new javax.swing.JLabel();
jTextField3 = new javax.swing.JTextField();
jTextField4 = new javax.swing.JTextField();
jLabel4 = new javax.swing.JLabel();
jScrollPane2 = new javax.swing.JScrollPane();
jTextArea1 = new javax.swing.JTextArea();
jLabel5 = new javax.swing.JLabel();
jLabel6 = new javax.swing.JLabel();
jTextField5 = new javax.swing.JTextField();
jLabel7 = new javax.swing.JLabel();
jTextField6 = new javax.swing.JTextField();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
addWindowListener(new java.awt.event.WindowAdapter() {
public void windowOpened(java.awt.event.WindowEvent evt) {
formWindowOpened(evt);
jTable1.setModel(new javax.swing.table.DefaultTableModel(data,heading)
jScrollPane1.setViewportView(jTable1);
jPanel1.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "Öðrenci Bilgileri", javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Tahoma", 1, 12))); // NOI18N
jLabel1.setText("Öðrenci No : ");
jLabel2.setText("Adý : ");
jLabel3.setText("Sýnýf : ");
jLabel4.setText("Soyad : ");
jTextArea1.setColumns(20);
jTextArea1.setRows(5);
jScrollPane2.setViewportView(jTextArea1);
jLabel5.setText("Adress : ");
jLabel6.setText("Tel : ");
jLabel7.setText("Þube : ");
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(22, 22, 22)
.addComponent(jLabel1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 128, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(364, Short.MAX_VALUE))
.addComponent(jSeparator1, javax.swing.GroupLayout.DEFAULT_SIZE, 581, Short.MAX_VALUE)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(40, 40, 40)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jLabel6)
.addComponent(jLabel2)
.addComponent(jLabel4)
.addComponent(jLabel5))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jTextField4)
.addComponent(jTextField2, javax.swing.GroupLayout.DEFAULT_SIZE, 131, Short.MAX_VALUE))
.addGap(28, 28, 28)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jLabel3)
.addComponent(jLabel7))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jTextField3, javax.swing.GroupLayout.DEFAULT_SIZE, 248, Short.MAX_VALUE)
.addComponent(jTextField6, javax.swing.GroupLayout.DEFAULT_SIZE, 248, Short.MAX_VALUE)))
.addComponent(jTextField5, javax.swing.GroupLayout.PREFERRED_SIZE, 132, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 320, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(49, 49, 49))
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jSeparator1, javax.swing.GroupLayout.PREFERRED_SIZE, 10, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(jLabel3)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel4)
.addComponent(jLabel7)
.addComponent(jTextField4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField6, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel5)
.addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel6)
.addComponent(jTextField5, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap())
jButton1.setText("Kaydet");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
jButton2.setText("Temizle");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
jButton3.setText("Çýk");
jButton3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton3ActionPerformed(evt);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 597, Short.MAX_VALUE)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addComponent(jButton1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton3)))
.addContainerGap())
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 88, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton1)
.addComponent(jButton2)
.addComponent(jButton3))
.addGap(38, 38, 38))
pack();
}// </editor-fold>
private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
System.exit(0);
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
jTextField1.setText("");
jTextField2.setText("");
jTextField3.setText("");
jTextField4.setText("");
jTextField5.setText("");
jTextField6.setText("");
jTextArea1.setText("");
private void formWindowOpened(java.awt.event.WindowEvent evt) {
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
try {
st.executeUpdate("INSERT studentdata(Ogrenci_no,Ad,Soyad,Sinif,Sube,Adres,Tel) VALUES(" +
Integer.parseInt(jTextField1.getText()) + ", '" +
jTextField2.getText() + "', '" +
jTextField4.getText() + "', " +
Integer.parseInt(jTextField3.getText()) + ", '" +
jTextField6.getText() + "', '" +
jTextArea1.getText() + "', " +
Integer.parseInt(jTextField5.getText()) +
} catch (SQLException e) {
System.out.println("Writing data Error!");
try {
ResultSet rs = st.executeQuery("SELECT * FROM studentdata");
while (rs.next()) {
Object[] rowValues = {rs.getInt(1),rs.getString(2),rs.getString(3),rs.getInt(4),rs.getString(5),rs.getString(6),rs.getInt(7)};
row.addElement(rowValues);
data = new Object[row.size()][7];
for(int i=0;i<row.size();i++){
data[i]=(Object[]) row.get(i);
} catch (Exception e) {
System.out.println("reading error!");
jTable1.setModel(new MyTableModel());
jTable1.setVisible(true);
* @param args the command line arguments
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new DatabaseConnection().setVisible(true);
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton3;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JLabel jLabel5;
private javax.swing.JLabel jLabel6;
private javax.swing.JLabel jLabel7;
private javax.swing.JPanel jPanel1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JScrollPane jScrollPane2;
private javax.swing.JSeparator jSeparator1;
private javax.swing.JTable jTable1;
private javax.swing.JTextArea jTextArea1;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
private javax.swing.JTextField jTextField3;
private javax.swing.JTextField jTextField4;
private javax.swing.JTextField jTextField5;
private javax.swing.JTextField jTextField6;
// End of variables declaration
Connection con;
Statement st;
Vector row = new Vector();
Object[][] data;
Object[] heading = {"Öðrenci_No","Ad","Soyad","Sýnýf","Sube","Adres","Tel"};
class MyTableModel extends AbstractTableModel{
public int getColumnCount(){
return heading.length;
public int getRowCount(){
return data.length;
@Override
public String getColumnName(int column){
return heading[column].toString();
public Object getValueAt(int row, int column){
return data[row][column];
public boolean isCellEditable(){
return false;
@Override
public void setValueAt(Object value, int row, int column){
data[row][column] = value;
fireTableCellUpdated(row, column);
}

any one to help ?

How to use JTable and database

how i want to know how to store data into Jtable from the database for the end users.
any tutorial or example will be helpfull.
thank you

my problem is i want to store data that i will get from the database into a JTableThen you problem is with Swing in which case you should be searching the Swing forum for answers. This question has been asked and answered several times. I know I've posted solutions before.

JTable and Database (mysql)

Does anyone know or have codes on how to get value from JTable cells and it will store into database (mysql).

You will have to extract the values for each column within the row and then construct an INSERT statement with the column names/values (or simply values if all columns)
If the row already exists and you want to update it, you will have to write an UPDATE stmt.
I don't have the code at hand, but will post it if I find it

JTable and Databases

Hi all,
I have two files excerpts from my Java application. I feel that in order for me to get understood so well, with regards to a problem that challenged me, I had to post these two files as you can see below. They are called ResultSetTableModel.java and DisplayQueryResults.java [which gets displayed in an internal frame].
I have this code from ResultSetTableModel
// ResultSetTableModel.java
// A TableModel that supplies ResultSet data to a JTable.
import java.sql.Connection;
import java.sql.Statement;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import javax.swing.table.AbstractTableModel;
// ResultSet rows and columns are counted from 1 and JTable
// rows and columns are counted from 0. When processing
// ResultSet rows or columns for use in a JTable, it is
// necessary to add 1 to the row or column number to manipulate
// the appropriate ResultSet column (i.e., JTable column 0 is
// ResultSet column 1 and JTable row 0 is ResultSet row 1).
public class ResultSetTableModel extends AbstractTableModel
 private Connection connection;
 private Statement statement;
 private ResultSet resultSet;
 private ResultSetMetaData metaData;
 private int numberOfRows;
 // keep track of database connection status
 private boolean connectedToDatabase = false;
 // constructor initializes resultSet and obtains its meta data object;
 // determines number of rows
 public ResultSetTableModel(String driver, String url,
 String username, String password, String query)
 throws SQLException, ClassNotFoundException {
 // load database driver class
 Class.forName(driver);
 // connect to database
 connection = DriverManager.getConnection(url, username, password);
 // create Statement to query database
 statement = connection.createStatement(
 ResultSet.TYPE_SCROLL_INSENSITIVE,
 ResultSet.CONCUR_READ_ONLY);
 // update database connection status
 connectedToDatabase = true;
 // set query and execute it
 setQuery(query);
 } // end constructor ResultSetTableModel
 // get class that represents column type
 public Class getColumnClass(int column) throws IllegalStateException {
 // ensure database connection is available
 if (!connectedToDatabase)
 throw new IllegalStateException("Not Connected to Database");
 // determine Java class of column
 try {
 String className = metaData.getColumnClassName(column + 1);
 // return Class object that represents className
 return Class.forName(className);
 } // end try
 catch (Exception exception) {
 exception.printStackTrace();
 } // end catch
 //return Object.class; // if problems occur above, assume type Object
 return getValueAt(0, column).getClass(); // added January 25, 2008 in stead of the one above
 } // end method getColumnClass
 // get number of columns in ResultSet
 public int getColumnCount() throws IllegalStateException {
 // ensure database connection is available
 if (!connectedToDatabase)
 throw new IllegalStateException("Not Connected to Database");
 // determine number of columns
 try {
 return metaData.getColumnCount();
 } // end try
 catch (SQLException sqlException) {
 sqlException.printStackTrace();
 } // end catch
 return 0; // if problems occur above, return 0 for number of columns
 } // end method getColumnCount
 // get name of a particular column in ResultSet
 public String getColumnName(int column) throws IllegalStateException {
 // ensure database connection is available
 if (!connectedToDatabase)
 throw new IllegalStateException("Not Connected to Database");
 // determine column name
 try {
 return metaData.getColumnName(column + 1);
 } // end try
 catch (SQLException sqlException) {
 sqlException.printStackTrace();
 } // end catch
 return ""; // if problems, return empty string for column name
 } // end method getColumnName
 // return number of rows in ResultSet
 public int getRowCount() throws IllegalStateException {
 // ensure database connection is available
 if (!connectedToDatabase)
 throw new IllegalStateException("Not Connected to Database");
 return numberOfRows;
 } // end method getRowCount
 // obtain value in particular row and column
 public Object getValueAt(int row, int column)
 throws IllegalStateException {
 // ensure database connection is available
 if (!connectedToDatabase)
 throw new IllegalStateException("Not Connected to Database");
 // obtain a value at specified ResultSet row and column
 try {
 resultSet.absolute(row + 1);
 return resultSet.getObject(column + 1);
 } // end try
 catch ( SQLException sqlException ) {
 sqlException.printStackTrace();
 } // end catch
 return ""; // if problems, return empty string object
 } // end method getValueAt
 * Don't need to implement this method unless your table's
 * editable.
public boolean isCellEditable(int row, int column) { // Added on January 25, 2008 6:51 A.M.
 //Note that the data/cell address is constant,
 //no matter where the cell appears onscreen.
 if (column < 2) {
 return false;
 } else {
 return true;
 // set new database query string
 public void setQuery(String query)
 throws SQLException, IllegalStateException {
 // ensure database connection is available
 if (!connectedToDatabase)
 throw new IllegalStateException("Not Connected to Database");
 // specify query and execute it
 resultSet = statement.executeQuery(query);
 // obtain meta data for ResultSet
 metaData = resultSet.getMetaData();
 // determine number of rows in ResultSet
 resultSet.last(); // move to last row
 numberOfRows = resultSet.getRow(); // get row number
 // notify JTable that model has changed
 fireTableStructureChanged();
 } // end method setQuery
 // close Statement and Connection
 public void disconnectFromDatabase() {
 if (!connectedToDatabase)
 return;
 // close Statement and Connection
 try {
 statement.close();
 connection.close();
 } // end try
 catch (SQLException sqlException) {
 sqlException.printStackTrace();
 } // end catch
 finally { // update database connection status
 connectedToDatabase = false;
 } // end finally
 } // end method disconnectFromDatabase
} // end class ResultSetTableModelThe DisplayQueryResults code follows:
// DisplayQueryResults.java
// Display the contents of the Authors table in the
// Books database.
import java.awt.BorderLayout;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.sql.SQLException;
import javax.swing.JFrame;
import javax.swing.JTextArea;
import javax.swing.JScrollPane;
import javax.swing.ScrollPaneConstants;
import javax.swing.JTable;
import javax.swing.JOptionPane;
import javax.swing.JButton;
import javax.swing.Box;
import javax.swing.JInternalFrame;
import java.util.*; // for the Bundle
import javax.swing.event.InternalFrameEvent;
import javax.swing.event.InternalFrameListener;
import javax.swing.event.InternalFrameAdapter;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.ListSelectionModel;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.event.*; // step 1
import javax.swing.table.TableModel; // step 1
public class DisplayQueryResults extends JInternalFrame implements TableModelListener { // step 2
 // JDBC driver, database URL, username and password
 ResourceBundle bundle = ResourceBundle.getBundle("Accounting");
 String JDBC_DRIVER = bundle.getString("Driver");
 String DATABASE_URL = bundle.getString("URL");
 String USERNAME = bundle.getString("User");
 String PASSWORD = bundle.getString("Password");
 String DEFAULT_QUERY = bundle.getString("Query");
 private ResultSetTableModel tableModel;
 private JTextArea queryArea;
 static final int xOffset = 0, yOffset = 200;
 // create ResultSetTableModel and GUI
 public DisplayQueryResults() {
 super("Sales of the Day",
 true, //resizable
 true, //closable
 true, //maximizable
 false);//iconifiable
 //...Create the GUI and put it in the window...
 //Set the window's location.
 setLocation(xOffset, yOffset);
 // create ResultSetTableModel and display database table
 try {
 // create TableModel for results of query SELECT * FROM authors
 tableModel = new ResultSetTableModel(JDBC_DRIVER, DATABASE_URL,
 USERNAME, PASSWORD, DEFAULT_QUERY);
 // set up JTextArea in which user types queries
 queryArea = new JTextArea(DEFAULT_QUERY, 1, 100);
 queryArea.setWrapStyleWord(true);
 queryArea.setLineWrap(true);
 JScrollPane scrollPane = new JScrollPane(queryArea,
 ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED,
 ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED);
 // set up JButton for submitting queries
 JButton submitButton = new JButton("Submit Query");
 // create Box to manage placement of queryArea and
 // submitButton in GUI
 Box box = Box.createHorizontalBox();
 box.add(scrollPane);
 box.add(submitButton);
 // create JTable delegate for tableModel
 final JTable resultTable = new JTable(tableModel);
 resultTable.setFillsViewportHeight(true); // Makes the empty space heights white
 resultTable.setRowSelectionAllowed(true);
 resultTable.getModel().addTableModelListener(this); // step 3
 // place GUI components on content pane
 add(box, BorderLayout.NORTH);
 add(new JScrollPane(resultTable), BorderLayout.CENTER);
 // create event listener for submitButton
 submitButton.addActionListener(
 new ActionListener()
 // pass query to table model
 public void actionPerformed(ActionEvent event)
 // perform a new query
 try
 tableModel.setQuery(queryArea.getText());
 } // end try
 catch ( SQLException sqlException)
 JOptionPane.showMessageDialog(null,
 sqlException.getMessage(), "Database error",
 JOptionPane.ERROR_MESSAGE);
 // try to recover from invalid user query
 // by executing default query
 try {
 tableModel.setQuery(DEFAULT_QUERY);
 queryArea.setText(DEFAULT_QUERY);
 } // end try
 catch (SQLException sqlException2) {
 JOptionPane.showMessageDialog(null,
 sqlException2.getMessage(), "Database error",
 JOptionPane.ERROR_MESSAGE);
 // ensure database connection is closed
 tableModel.disconnectFromDatabase();
 System.exit(1); // terminate application
 } // end inner catch
 } // end outer catch
 } // end actionPerformed
 } // end ActionListener inner class
 ); // end call to addActionListener
 //...Then set the window size or call pack...
 setSize(750,300);
 setVisible(true); // display window
 } // end try
 catch (ClassNotFoundException classNotFound) {
 JOptionPane.showMessageDialog(null,
 "MySQL driver not found", "Driver not found",
 JOptionPane.ERROR_MESSAGE);
 System.exit(1); // terminate application
 } // end catch
 catch (SQLException sqlException) {
 JOptionPane.showMessageDialog(null, sqlException.getMessage(),
 "Database error", JOptionPane.ERROR_MESSAGE);
 // ensure database connection is closed
 tableModel.disconnectFromDatabase();
 System.exit(1); // terminate application
 } // end catch
 // dispose of window when user quits application (this overrides
 // the default of HIDE_ON_CLOSE)
 setDefaultCloseOperation(DISPOSE_ON_CLOSE);
 // ensure database connection is closed when user quits application
 addInternalFrameListener(
 new InternalFrameAdapter() {
 // disconnect from database and exit when window has closed
 public void windowClosed(WindowEvent event) {
 tableModel.disconnectFromDatabase();
 System.exit(0);
 } // end method windowClosed
 } // end WindowAdapter inner class
 ); // end call to addWindowListener
 } // end DisplayQueryResults constructor
 public void tableChanged(TableModelEvent e) { // step 4
 int row = e.getFirstRow();
 int column = e.getColumn();
 TableModel model = (TableModel)e.getSource();
 String columnName = model.getColumnName(column);
 Object tableModel = model.getValueAt(row, column);
 // Do something with the data...
 System.out.println(tableModel);
 System.out.println("data");
 // execute application
 public static void main(String args[]) {
 new DisplayQueryResults();
 } // end main
} // end class DisplayQueryResultsMy problem:
is in these lines:
public void tableChanged(TableModelEvent e) { // step 4
 int row = e.getFirstRow();
 int column = e.getColumn();
 TableModel model = (TableModel)e.getSource();
 String columnName = model.getColumnName(column);
 Object tableModel = model.getValueAt(row, column);
 // Do something with the data...
 System.out.println(tableModel);
 System.out.println("data"); // should output in the console
 }How do we notify java that a cell on a row has changed so that we can reflect the changes to the database. The current application shows that the data in cells are editable, but when we edit a cell and hit enter, data changes back to the previous data in that particular cell. And the data as well does not change its state: for example, if a data in the table has a value of boolean value false [checkbox unchecked], I can not modify the checkbox state to checked state. The tableChanged method does not get executed, and therefore, this is a serious error that I cant figure out.
My question:
What code should I write so that I will be able to notify java of the changed cell and how do we write the code that will reflect the changed values in a cell into the database?
Edited by: Oliverbob on Jan 26, 2008 8:40 PM

This maybe what you're looking for??
http://developer.java.sun.com/developer/Books/swing2/chapter18-09.html

JTable and Database communication

Hi all,
I have two files excerpts from my Java application. I feel that in order for me to get understood so well, with regards to a problem that challenged me, I had to post these two files as you can see below. They are called ResultSetTableModel.java and DisplayQueryResults.java [which gets displayed in an internal frame].
I have this code from ResultSetTableModel
// ResultSetTableModel.java
// A TableModel that supplies ResultSet data to a JTable.
import java.sql.Connection;
import java.sql.Statement;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import javax.swing.table.AbstractTableModel;
// ResultSet rows and columns are counted from 1 and JTable
// rows and columns are counted from 0. When processing
// ResultSet rows or columns for use in a JTable, it is
// necessary to add 1 to the row or column number to manipulate
// the appropriate ResultSet column (i.e., JTable column 0 is
// ResultSet column 1 and JTable row 0 is ResultSet row 1).
public class ResultSetTableModel extends AbstractTableModel
 private Connection connection;
 private Statement statement;
 private ResultSet resultSet;
 private ResultSetMetaData metaData;
 private int numberOfRows;
 // keep track of database connection status
 private boolean connectedToDatabase = false;
 // constructor initializes resultSet and obtains its meta data object;
 // determines number of rows
 public ResultSetTableModel(String driver, String url,
 String username, String password, String query)
 throws SQLException, ClassNotFoundException {
 // load database driver class
 Class.forName(driver);
 // connect to database
 connection = DriverManager.getConnection(url, username, password);
 // create Statement to query database
 statement = connection.createStatement(
 ResultSet.TYPE_SCROLL_INSENSITIVE,
 ResultSet.CONCUR_READ_ONLY);
 // update database connection status
 connectedToDatabase = true;
 // set query and execute it
 setQuery(query);
 } // end constructor ResultSetTableModel
 // get class that represents column type
 public Class getColumnClass(int column) throws IllegalStateException {
 // ensure database connection is available
 if (!connectedToDatabase)
 throw new IllegalStateException("Not Connected to Database");
 // determine Java class of column
 try {
 String className = metaData.getColumnClassName(column + 1);
 // return Class object that represents className
 return Class.forName(className);
 } // end try
 catch (Exception exception) {
 exception.printStackTrace();
 } // end catch
 //return Object.class; // if problems occur above, assume type Object
 return getValueAt(0, column).getClass(); // added January 25, 2008 in stead of the one above
 } // end method getColumnClass
 // get number of columns in ResultSet
 public int getColumnCount() throws IllegalStateException {
 // ensure database connection is available
 if (!connectedToDatabase)
 throw new IllegalStateException("Not Connected to Database");
 // determine number of columns
 try {
 return metaData.getColumnCount();
 } // end try
 catch (SQLException sqlException) {
 sqlException.printStackTrace();
 } // end catch
 return 0; // if problems occur above, return 0 for number of columns
 } // end method getColumnCount
 // get name of a particular column in ResultSet
 public String getColumnName(int column) throws IllegalStateException {
 // ensure database connection is available
 if (!connectedToDatabase)
 throw new IllegalStateException("Not Connected to Database");
 // determine column name
 try {
 return metaData.getColumnName(column + 1);
 } // end try
 catch (SQLException sqlException) {
 sqlException.printStackTrace();
 } // end catch
 return ""; // if problems, return empty string for column name
 } // end method getColumnName
 // return number of rows in ResultSet
 public int getRowCount() throws IllegalStateException {
 // ensure database connection is available
 if (!connectedToDatabase)
 throw new IllegalStateException("Not Connected to Database");
 return numberOfRows;
 } // end method getRowCount
 // obtain value in particular row and column
 public Object getValueAt(int row, int column)
 throws IllegalStateException {
 // ensure database connection is available
 if (!connectedToDatabase)
 throw new IllegalStateException("Not Connected to Database");
 // obtain a value at specified ResultSet row and column
 try {
 resultSet.absolute(row + 1);
 return resultSet.getObject(column + 1);
 } // end try
 catch ( SQLException sqlException ) {
 sqlException.printStackTrace();
 } // end catch
 return ""; // if problems, return empty string object
 } // end method getValueAt
 * Don't need to implement this method unless your table's
 * editable.
public boolean isCellEditable(int row, int column) { // Added on January 25, 2008 6:51 A.M.
 //Note that the data/cell address is constant,
 //no matter where the cell appears onscreen.
 if (column < 2) {
 return false;
 } else {
 return true;
 // set new database query string
 public void setQuery(String query)
 throws SQLException, IllegalStateException {
 // ensure database connection is available
 if (!connectedToDatabase)
 throw new IllegalStateException("Not Connected to Database");
 // specify query and execute it
 resultSet = statement.executeQuery(query);
 // obtain meta data for ResultSet
 metaData = resultSet.getMetaData();
 // determine number of rows in ResultSet
 resultSet.last(); // move to last row
 numberOfRows = resultSet.getRow(); // get row number
 // notify JTable that model has changed
 fireTableStructureChanged();
 } // end method setQuery
 // close Statement and Connection
 public void disconnectFromDatabase() {
 if (!connectedToDatabase)
 return;
 // close Statement and Connection
 try {
 statement.close();
 connection.close();
 } // end try
 catch (SQLException sqlException) {
 sqlException.printStackTrace();
 } // end catch
 finally { // update database connection status
 connectedToDatabase = false;
 } // end finally
 } // end method disconnectFromDatabase
} // end class ResultSetTableModelThe DisplayQueryResults code follows:
// DisplayQueryResults.java
// Display the contents of the Authors table in the
// Books database.
import java.awt.BorderLayout;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.sql.SQLException;
import javax.swing.JFrame;
import javax.swing.JTextArea;
import javax.swing.JScrollPane;
import javax.swing.ScrollPaneConstants;
import javax.swing.JTable;
import javax.swing.JOptionPane;
import javax.swing.JButton;
import javax.swing.Box;
import javax.swing.JInternalFrame;
import java.util.*; // for the Bundle
import javax.swing.event.InternalFrameEvent;
import javax.swing.event.InternalFrameListener;
import javax.swing.event.InternalFrameAdapter;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.ListSelectionModel;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.event.*; // step 1
import javax.swing.table.TableModel; // step 1
public class DisplayQueryResults extends JInternalFrame implements TableModelListener { // step 2
 // JDBC driver, database URL, username and password
 ResourceBundle bundle = ResourceBundle.getBundle("Accounting");
 String JDBC_DRIVER = bundle.getString("Driver");
 String DATABASE_URL = bundle.getString("URL");
 String USERNAME = bundle.getString("User");
 String PASSWORD = bundle.getString("Password");
 String DEFAULT_QUERY = bundle.getString("Query");
 private ResultSetTableModel tableModel;
 private JTextArea queryArea;
 static final int xOffset = 0, yOffset = 200;
 // create ResultSetTableModel and GUI
 public DisplayQueryResults() {
 super("Sales of the Day",
 true, //resizable
 true, //closable
 true, //maximizable
 false);//iconifiable
 //...Create the GUI and put it in the window...
 //Set the window's location.
 setLocation(xOffset, yOffset);
 // create ResultSetTableModel and display database table
 try {
 // create TableModel for results of query SELECT * FROM authors
 tableModel = new ResultSetTableModel(JDBC_DRIVER, DATABASE_URL,
 USERNAME, PASSWORD, DEFAULT_QUERY);
 // set up JTextArea in which user types queries
 queryArea = new JTextArea(DEFAULT_QUERY, 1, 100);
 queryArea.setWrapStyleWord(true);
 queryArea.setLineWrap(true);
 JScrollPane scrollPane = new JScrollPane(queryArea,
 ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED,
 ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED);
 // set up JButton for submitting queries
 JButton submitButton = new JButton("Submit Query");
 // create Box to manage placement of queryArea and
 // submitButton in GUI
 Box box = Box.createHorizontalBox();
 box.add(scrollPane);
 box.add(submitButton);
 // create JTable delegate for tableModel
 final JTable resultTable = new JTable(tableModel);
 resultTable.setFillsViewportHeight(true); // Makes the empty space heights white
 resultTable.setRowSelectionAllowed(true);
 resultTable.getModel().addTableModelListener(this); // step 3
 // place GUI components on content pane
 add(box, BorderLayout.NORTH);
 add(new JScrollPane(resultTable), BorderLayout.CENTER);
 // create event listener for submitButton
 submitButton.addActionListener(
 new ActionListener()
 // pass query to table model
 public void actionPerformed(ActionEvent event)
 // perform a new query
 try
 tableModel.setQuery(queryArea.getText());
 } // end try
 catch ( SQLException sqlException)
 JOptionPane.showMessageDialog(null,
 sqlException.getMessage(), "Database error",
 JOptionPane.ERROR_MESSAGE);
 // try to recover from invalid user query
 // by executing default query
 try {
 tableModel.setQuery(DEFAULT_QUERY);
 queryArea.setText(DEFAULT_QUERY);
 } // end try
 catch (SQLException sqlException2) {
 JOptionPane.showMessageDialog(null,
 sqlException2.getMessage(), "Database error",
 JOptionPane.ERROR_MESSAGE);
 // ensure database connection is closed
 tableModel.disconnectFromDatabase();
 System.exit(1); // terminate application
 } // end inner catch
 } // end outer catch
 } // end actionPerformed
 } // end ActionListener inner class
 ); // end call to addActionListener
 //...Then set the window size or call pack...
 setSize(750,300);
 setVisible(true); // display window
 } // end try
 catch (ClassNotFoundException classNotFound) {
 JOptionPane.showMessageDialog(null,
 "MySQL driver not found", "Driver not found",
 JOptionPane.ERROR_MESSAGE);
 System.exit(1); // terminate application
 } // end catch
 catch (SQLException sqlException) {
 JOptionPane.showMessageDialog(null, sqlException.getMessage(),
 "Database error", JOptionPane.ERROR_MESSAGE);
 // ensure database connection is closed
 tableModel.disconnectFromDatabase();
 System.exit(1); // terminate application
 } // end catch
 // dispose of window when user quits application (this overrides
 // the default of HIDE_ON_CLOSE)
 setDefaultCloseOperation(DISPOSE_ON_CLOSE);
 // ensure database connection is closed when user quits application
 addInternalFrameListener(
 new InternalFrameAdapter() {
 // disconnect from database and exit when window has closed
 public void windowClosed(WindowEvent event) {
 tableModel.disconnectFromDatabase();
 System.exit(0);
 } // end method windowClosed
 } // end WindowAdapter inner class
 ); // end call to addWindowListener
 } // end DisplayQueryResults constructor
 public void tableChanged(TableModelEvent e) { // step 4
 int row = e.getFirstRow();
 int column = e.getColumn();
 TableModel model = (TableModel)e.getSource();
 String columnName = model.getColumnName(column);
 Object tableModel = model.getValueAt(row, column);
 // Do something with the data...
 System.out.println(tableModel);
 System.out.println("data");
 // execute application
 public static void main(String args[]) {
 new DisplayQueryResults();
 } // end main
} // end class DisplayQueryResultsMy problem:
is in these lines:
public void tableChanged(TableModelEvent e) { // step 4
 int row = e.getFirstRow();
 int column = e.getColumn();
 TableModel model = (TableModel)e.getSource();
 String columnName = model.getColumnName(column);
 Object tableModel = model.getValueAt(row, column);
 // Do something with the data...
 System.out.println(tableModel);
 System.out.println("data"); // should output in the console
 }How do we notify java that a cell on a row has changed so that we can reflect the changes to the database. The current application shows that the data in cells are editable, but when we edit a cell and hit enter, data changes back to the previous data in that particular cell. And the data as well does not change its state: for example, if a data in the table has a value of boolean value false [checkbox unchecked], I can not modify the checkbox state to checked state. The tableChanged method does not get executed, and therefore, this is a serious error that I cant figure out.
My question:
What code should I write so that I will be able to notify java of the changed cell and how do we write the code that will reflect the changed values in a cell into the database?
Edited by: Oliverbob on Jan 26, 2008 9:54 PM

Why don't you check out the link shown below:
http://www.aokabc.com
and just follow the white rabbit!
;o)
V.V.

Please help in storing JTable in database

hai Abrami,
I saw in JDK\bin\demo\jfc\Tableexample. but it contans example only for populating the Table with the values from database which I finished alraedy. But I treid of storing the Table values in database using VArray. but it contradicts with the several operations such as retireving Single field from database Updating the database when value single populated table changes.
So please help me in this.This isthe final part of project.

Bathina,
Did you try doing an Internet search? I did one for the terms "jtable" and "database". Here are my results:
http://tinyurl.com/4ttl4
And if you just want someone to do your work for you, then try HotDispatch or Rent-A-Coder (or similar -- there are lots of others like these two).
Good Luck,
Avi.

How Can I use JTable Like Datagrid (Spreadsheet) and database

Please how can I achieve the following in java:
(1) Create a Grid (spreadsheets-Like) with JTable and be able to add new record (rows) as I reach the end of the last column during data entry.
(2) Save the content of the grid to a text file as well as a database.
(3) Retrieve the content of the text file or database to the Jtable
(4) How can I connect to SQL Server without using JDBC-ODBC-bridge and also with Oracle.
(5) How can I read and write to LPT and COMS ports

If you don't know how to do any of this, you need to go through the tutorials. Start here: http://java.sun.com/docs/books/tutorial/
James

How to put data in JTable from database

hi everyone,
i want to query the databse and put the result in the JTable and if possible i want to edit some information. For example: i have 5 records in the database query them and place them in JTable and each record has its own status. if i want to change the status For Example: the status of the 4 records are "Cleared" and the other one is "RELEASEd" so if i have JCombo Box to set the 4 records in to RELEASED status and then save the changes is that possible?
thank you
dhing

In [url /thread.jsp?forum=54&thread=387565]this thread I describe how to use a result set as a basis for table data. Check some database tutorials for information on getting a result set.

JTable and ResultSet TableModel with big resultset

Hi, I have a question about JTable and a ResultSet TableModel.
I have to develop a swing JTable application that gets the data from a ResultSetTableModel where the user can update the jtable data.
The problem is the following:
the JTable have to contain the whole data of the source database table. Currently I have defined a
a TYPE_SCROLL_SENSITIVE & CONCUR_UPDATABLE statement.
The problem is that when I execute the query the whole ResultSet is "downloaded" on the client side application (my jtable) and I could receive (with big resultsets) an "out of memory error"...
I have investigate about the possibility of load (in the client side) only a small subset of the resultset but with no luck. In the maling lists I see that the only way to load the resultset incrementally is to define a forward only resultset with autocommit off, and using setFetchSize(...). But this solution doesn't solve my problem because if the user scrolls the entire table, the whole resultset will be downloaded...
In my opinion, there is only one solution:
- create a small JTable "cache structure" and update the structure with "remote calls" to the server ...
in other words I have to define on the server side a "servlet environment" that queries the database, creates the resultset and gives to the jtable only the data subsets that it needs... (alternatively I could define an RMI client/server distribuited applications...)
This is my solution, somebody can help me?
Are there others solutions for my problem?
Thanks in advance,
Stefano

The database table currently is about 80000 rows but the next year will be 200000 and so on ...
I know that excel has this limit but my JTable have to display more data than a simple excel work sheet.
I explain in more detail my solution:
whith a distribuited TableModel the whole tablemodel data are on the server side and not on the client (jtable).
The local JTable TableModel gets the values from a local (limited, 1000rows for example) structure, and when the user scroll up and down the jtable the TableModel updates this structure...
For example: initially the local JTable structure contains the rows from 0 to 1000;
the user scroll down, when the cell 800 (for example) have to be displayed the method:
getValueAt(800,...)
is called.
This method will update the table structure. Now, for example, the table structure will contain data for example from row 500 to row 1500 (the data from 0 to 499 are deleted)
In this way the local table model dimension will be indipendent from the real database table dimension ...
I hope that my solution is more clear now...
under these conditions the only solutions that can work have to implement a local tablemodel with limited dimension...
Another solution without servlet and rmi that I have found is the following:
update the local limited tablemodel structure quering the database server with select .... limit ... offset
but, the select ... limit ... offset is very dangerous when the offset is high because the database server have to do a sequential scan of all previuous records ...
with servlet (or RMI) solution instead, the entire resultset is on the server and I have only to request the data from the current resultset from row N to row N+1000 without no queries...
Thanks

JTable + update database

hey all!!!
i ve been searching the internet for a while but i don't seem to be able to find any solution to my problem. well, what i want to do is this...
i have mysql db connected to my applets. i select from table and show the result in JTable on the interface. it all good and well but i am wondering whether it possible to update the table and then, let's say press button, and also update the databse or not?? what i mean is whether i have to press the button get values in the corresponding row, load the values into JTextFields and then press another button and update the database or whether i can just change the JTable and then press only one button and everything that's in the JTable will get, magically, updated in the database without having to use the middle JTextField step??
v.v.

are you a soldier??No, but I served in the Navy for 5 years.
>
thanks that's exactelly what i needed.... will give
it a read
v.v.You're welcome; happy reading.

JFrame With Two JTables Accessing Database; Last Table Partial Display

I have an application that calls a JFrame in a database application. The JFrame contains a number of panels, two of which are dedicated to JTables.
The first JTable,upon completion of a resultset, displays master records for the application. Immediately upon completion, the second JTable should be displaying details related to the selected master (on first retrieval, the second Jtable should reflect details related to the first displayed record in the first JTable).
The first JTable displays correctly. The second only displays one record, even though thru inserted System.out.println statements, I can track the number of rows that should be there.
The first JTable fills and then calls a function filldetl(). This is the code:
+
private void filldetl() {
try
details.setRowCount(0);
Statement t = conn.createStatement();
ResultSet dt; // for look up
dt = t.executeQuery("select sku,skuqty,skuunit,value," +
"skucurrency,skuorigin,htc from rcvrdtl " +
"WHERE invoiceno = '" + +invno< 
"' ORDER BY invoiceno;");
dd = dt.getMetaData();
*int< columnct = dd.getColumnCount();
System.+out+.println("Columns found = " + String.+valueOf+(columnct));
// Set up variable dbrowcount to find number of rows in resultset.
int dbrowcount = 0;
while *true*==dt.next()) {
dbrowcount++;
rowx = *new< Vector(columnct);
datax = new Vector();
for *int< x = 1; x <= columnct; x++) {
rowx.addElement(dt.getObject(x));
datax.addElement(rowx);
int rowNumx = dt.getRow();
System.+out+.println("Rows Found = " + String.+valueOf+(dbrowcount));
System.+out+.println("Located At Row " + String.+valueOf+(rowNumx));
for *int< x = 0; x < datax.size(); x++) {
details.addRow((Vector)datax.elementAt(x));
jTable1.revalidate();
jTable1.setRowSelectionInterval(0,0);
catch (Exception et) {
System.+out+.println(et.getMessage());
et.printStackTrace();
+
Can anyone tell me why I am only getting one record displayed in the second JTable, even though there are more? the variable dbrowcount keeps track of how many detail records there should be. And I have verified the counts by checking records in the database.
What am I doing wrong?
Any help appreciated....
Thanks
VazCro

This is the code as it should be. I don't know why it was trashed:
 private void filldetl() {
 try {
 details.setRowCount(0);
 Statement t = conn.createStatement();
 ResultSet dt; // for look up
 dt = t.executeQuery("select sku,skuqty,skuunit,value," +
 "skucurrency,skuorigin,htc from rcvrdtl " +
 "WHERE invoiceno = '" + invno +
 "' ORDER BY invoiceno;");
 dd = dt.getMetaData();
 int columnct = dd.getColumnCount();
 System.out.println("Columns found = " + String.valueOf(columnct));
 // Set up variable dbrowcount to find number of rows in resultset.
 int dbrowcount = 0;
 while (true==dt.next()) {
 dbrowcount++;
 rowx = new Vector(columnct);
 datax = new Vector();
 for (int x = 1; x <= columnct; x++) {
 rowx.addElement(dt.getObject(x));
 datax.addElement(rowx);
 int rowNumx = dt.getRow();
 System.out.println("Rows Found = " + String.valueOf(dbrowcount));
 System.out.println("Located At Row " + String.valueOf(rowNumx));
 for (int x = 0; x < datax.size(); x++) {
 details.addRow((Vector)datax.elementAt(x));
 jTable1.revalidate();
 jTable1.setRowSelectionInterval(0,0);
 catch (Exception et) {
 System.out.println(et.getMessage());
 et.printStackTrace();
I am calculating how many records were found for the second JTable and going thru the routines to load the second JTable. However, only one record appears.
Thanks for your help.
VazCro

Help with TableRowSorter , JTable and JList

Hello,
I�m developing an application in which I�m using a Jtable and Jlist to display data from a database. Jtable and Jlist share the same model.
public class DBSharedModel extends DefaultListModel implements TableModelFor the Jtable I set a sorter and an filter
DBSharedModel dataModel = new DBSharedModel();
Jtable jTable = new JTable(dataModel) ;
jTable.createDefaultColumnsFromModel();
jTable.setRowSelectionAllowed(true);
TableRowSorter<DBSharedModel> sorter = new TableRowSorter <DBSharedModel> (dataModel);
jTable.setRowSorter(sorter);From what I read until now JavaSE 6 has NOT a sorter for JList (like one for JTable).
So, I am using one from a this article http://java.sun.com/developer/technicalArticles/J2SE/Desktop/sorted_jlist/index.html
When I sort the data from the table, I need to sort the data from the list, too.
My ideea is to make the Jlist an Observer for the Jtable.
My questions are:
1. How can I find if the sorter makes an ASCENDING or DESCENDING ordering?
2. How can I find what the column that is ordered?
Or if you have any idea on how can I do the ordering on Jlist to be simultaneous to Jtable .
Please help!
Thank you

Oh what the hell:
Sun's basic Java tutorial
Sun's New To Java Center. Includes an overview of what Java is, instructions for setting up Java, an intro to programming (that includes links to the above tutorial or to parts of it), quizzes, a list of resources, and info on certification and courses.
http://javaalmanac.com. A couple dozen code examples that supplement The Java Developers Almanac.
jGuru. A general Java resource site. Includes FAQs, forums, courses, more.
JavaRanch. To quote the tagline on their homepage: "a friendly place for Java greenhorns." FAQs, forums (moderated, I believe), sample code, all kinds of goodies for newbies. From what I've heard, they live up to the "friendly" claim.
Bruce Eckel's Thinking in Java (Available online.)
Joshua Bloch's Effective Java
Bert Bates and Kathy Sierra's Head First Java. This one has been getting a lot of very positive comments lately.

Re: what is difference between sap locking and database locking

hi,
    what is difference between sap locking and database locking. Iam locked the table mara by using lock objects.
But iam unable to unlock the mara table. I give u the coding. Please check it.
REPORT zlock .
CALL FUNCTION 'ENQUEUE_EZTEST3'
EXPORTING
   MODE_MARA            = 'S'
   MANDT                = SY-MANDT
   MATNR                = 'SOU-1'.
call transaction 'MM02'.
CALL FUNCTION 'DEQUEUE_EZTEST3'
     EXPORTING
          mode_mara = 'E'
          mandt     = sy-mandt
          matnr     = 'SOU-1'.
IF sy-subrc = 0.
WRITE: 'IT IS unlocked'.
ENDIF.

Hi Paluri
Here is the difference between SAP locks and Database locks, i will try to find the solution to your code.
Regards
Ashish
Database Locks: The database system automatically sets database locks when it receives change statements (INSERT, UPDATE, MODIFY, DELETE) from a program. Database locks are physical locks on the database entries affected by these statements. You can only set a lock for an existing database entry, since the lock mechanism uses a lock flag in the entry. These flags are automatically deleted in each database commit. This means that database locks can never be set for longer than a single database LUW; in other words, a single dialog step in an R/3 application program.
Physical locks in the database system are therefore insufficient for the requirements of an R/3 transaction. Locks in the R/3 System must remain set for the duration of a whole SAP LUW, that is, over several dialog steps. They must also be capable of being handled by different work processes and even different application servers. Consequently, each lock must apply on all servers in that R/3 System.
SAP Locks:
To complement the SAP LUW concept, in which bundled database changes are made in a single database LUW, the R/3 System also contains a lock mechanism, fully independent of database locks, that allows you to set a lock that spans several dialog steps. These locks are known as SAP locks.
The SAP lock concept is based on lock objects. Lock objects allow you to set an SAP lock for an entire application object. An application object consists of one or more entries in a database table, or entries from more than one database table that are linked using foreign key relationships.
Before you can set an SAP lock in an ABAP program, you must first create a lock object in the ABAP Dictionary.

Some error in cluster alertlog but the cluster and database is normal used.

hi.everybody
i used RAC+ASM,RAC have two nodes and ASM have 3 group(+DATA,+CRS,+FRA),database is 11gR2,ASM used ASMlib,not raw.
When i start cluster or auto start after reboot the OS,in the cluster alertlog have some error as follow:
ERROR: failed to establish dependency between database rac and diskgroup resource ora.DATA.dg
[ohasd(7964)]CRS-2302:Cannot get GPnP profile. Error CLSGPNP_NO_DAEMON (GPNPD daemon is not running).
I do not know what cause these error but the cluster and database can start normal and use normal.
I do not know whether these errors will affect the service.
thanks everybody！

anyon has the same question?

Jtable and database

Similar Messages

Maybe you are looking for