Updating a Jtable

Question

Hi,
im trying to do a music library that connects to mysql.
My problem is that I dont know how to updatethe table after I have been modifying the database.
Ex.
I want to be able to import information to my database and then I want to see the changes instantly.
At the moment I only see the changes after a restart of the program.
My code:
import java.sql.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.Vector;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
import java.awt.Dimension;
import functions.*;
public class MusicLibrary extends JFrame implements ActionListener
     //DEFENITIONS
     JLabel north, south, deepSouth;
     JScrollPane scrollPane,scrollPane2;
     ImageIcon background,top,bottom;
     JTextField searchField;
     JButton searchButton;
     JTable table;
     JMenuBar menuBar;
     JMenu file;
     JMenuItem importSong,removeSong,close;
     Container c;
     public MusicLibrary()
          //MENU
          menuBar = new JMenuBar();
          file = new JMenu("File");
          file.setMnemonic(KeyEvent.VK_F);
          importSong = new JMenuItem("Import Song", KeyEvent.VK_I);
          removeSong = new JMenuItem("Remove Song", KeyEvent.VK_R);
          close = new JMenuItem("Close",KeyEvent.VK_C);
          setJMenuBar(menuBar);
          menuBar.add(file);
          file.add(importSong);
          file.add(removeSong);
          file.addSeparator();
          file.add(close);
          //SOUTH
          background = new ImageIcon("background.gif");
          south = new JLabel (background);
          //NORTH
          top = new ImageIcon("top.gif");
          north = new JLabel(top);
          north.setLayout(new FlowLayout());
          north.setBackground(new Color(0,0,0));
          searchField = new JTextField(50);
          searchButton = new JButton("Search");
          north.add(searchField);
          north.add(searchButton);
          //CONTAINER
          c = getContentPane();
          c.setLayout(new BorderLayout());
          c.add(north, BorderLayout.NORTH);
          setSize(800,620);
          setVisible(true);
          setResizable(false);
          setDefaultCloseOperation(EXIT_ON_CLOSE);
          //DEEP SOUTH
          bottom = new ImageIcon("bottom.gif");
          deepSouth = new JLabel(bottom);
          c.add(deepSouth, BorderLayout.SOUTH);
          //LISTENERS
          close.addActionListener(this);
          //searchField.addActionListener(this);
          searchButton.addActionListener(this);
          importSong.addActionListener(this);
          //DATABASE CONNECTION
          try {
               // load driver, create connection and statement
               Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
               Connection con = DriverManager.getConnection("jdbc:odbc:XXX);
               Statement stmt = con.createStatement();
               // query database
               ResultSet rs = stmt.executeQuery("SELECT * FROM song");
               // display result
               getTable(rs);
               scrollPane = new JScrollPane(table);
               c.add(scrollPane, BorderLayout.CENTER);
               // close statement and connection
               stmt.close();
               con.close();
          catch (ClassNotFoundException e) {
               JOptionPane.showMessageDialog(null, e.toString(),
                    "ClassNotFoundException", JOptionPane.ERROR_MESSAGE);
               System.exit(1);
          catch (SQLException e) {
               JOptionPane.showMessageDialog(null, e.toString(),
                    "SQLException", JOptionPane.ERROR_MESSAGE);
               System.exit(1);
          //addWindowListener(new WindowHandler());
          setVisible(true);
     public void actionPerformed (ActionEvent e)
          if(e.getSource()==close)
               System.exit(0);
          else if(e.getSource()==searchButton)
               String textsearch = searchField.getText();
               JOptionPane.showMessageDialog(null,"You searched for " + textsearch);
               try {
                    // load driver, create connection and statement
                    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
                    Connection con = DriverManager.getConnection("jdbc:odbc:XXX);
                    Statement stmt = con.createStatement();
                    // query database
                    ResultSet rs = stmt.executeQuery("SELECT * FROM song WHERE Song_Name = 'Africa'");
                    // display result
                    getTable(rs);
                    stmt.close();
                    con.close();
               catch (ClassNotFoundException f) {
                    JOptionPane.showMessageDialog(null, f.toString(),
                         "ClassNotFoundException", JOptionPane.ERROR_MESSAGE);
                    System.exit(1);
               catch (SQLException f) {
                    JOptionPane.showMessageDialog(null, f.toString(),
                         "SQLException", JOptionPane.ERROR_MESSAGE);
                    System.exit(1);
          else if(e.getSource()==importSong)
               try
                    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
                    Connection con = DriverManager.getConnection("jdbc:odbc:XXX);
                    EditDatabase.importMp3(con);          
                    //TEST
                    Statement stmt = con.createStatement();
                    // query database
                    ResultSet rs = stmt.executeQuery("SELECT * FROM song");
                    // display result
                    getTable(rs);
                    stmt.close();
                    con.close();
               catch (Exception q){System.out.println("error" + q);}
          repaint();
     private void getTable(ResultSet rs) throws SQLException
          ResultSetMetaData rsmd = rs.getMetaData();
          Vector cols = new Vector();
          Vector rows = new Vector();
          // get column names
          for (int i = 1; i <= rsmd.getColumnCount(); i++) {
               cols.addElement(rsmd.getColumnName(i));
          // get rows
          while (rs.next()) {
               Vector nextRow = new Vector();
               for (int i = 1; i <= rsmd.getColumnCount(); i++) {
                    nextRow.addElement(rs.getString(i));
               rows.addElement(nextRow);
          // create table
          table = new JTable(rows, cols);
     //-WINDOW HANDLER-
     private class WindowHandler extends WindowAdapter
          public void windowClosing(WindowEvent e)
               System.exit(0);
     //-MAIN-
     public static void main (String[] arg)
          new MusicLibrary();
*Functions is a package containing importMp3 and deleteMp3
I really appreciate all the help I can get!

Answer 1

Thanks for poiting in the right direction.
I had to rethink the design and I stumbled upon some code of yours camickr, thanks.
Now the code looks like this:
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.sql.*;
import java.util.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
import functions.*;
public class TableFromDatabase extends JFrame implements ActionListener, TableModelListener
     String driver = "sun.jdbc.odbc.JdbcOdbcDriver";
     String url = "jdbc:odbc:mild";  // if using ODBC Data Source name
     String userid = "frenkan";
     String password = "tfb";
     Container c;
     JTable table;
     JScrollPane scrollPane;
     JMenuItem      importSong,
     removeSong,
     close;
     Connection connection;
     public TableFromDatabase()
          Vector columnNames = new Vector();
          Vector data = new Vector();
          try
               //  Connect to the Database               
               Class.forName( driver );
               Connection connection = DriverManager.getConnection( url, userid, password );
               //  Read data from a table
               String sql = "Select * from Song";
               Statement stmt = connection.createStatement();
               ResultSet rs = stmt.executeQuery( sql );
               ResultSetMetaData md = rs.getMetaData();
               int columns = md.getColumnCount();
               //  Get column names
               for (int i = 1; i <= columns; i++)
                    columnNames.addElement( md.getColumnName(i) );
               //  Get row data
               while (rs.next())
                    Vector row = new Vector(columns);
                    for (int i = 1; i <= columns; i++)
                         row.addElement( rs.getObject(i) );
                    data.addElement( row );
               rs.close();
               stmt.close();
          catch(Exception e)
               System.out.println( e );
          // Create TableModel with databases data
          DefaultTableModel model = new DefaultTableModel(data, columnNames);
          //model.addTableModelListener(this);
          //  Create table with model as TableModel
          table = new JTable(model)
               public Class getColumnClass(int column)
                    return getValueAt(0, column).getClass();
          scrollPane = new JScrollPane( table );
          getContentPane().add( scrollPane );
          JPanel buttonPanel = new JPanel();
          c = getContentPane();
          c.add( buttonPanel, BorderLayout.SOUTH );
          //MENU
          JMenuBar menuBar = new JMenuBar();
          JMenu file = new JMenu("File");
          importSong = new JMenuItem("Import Song");
          removeSong = new JMenuItem("Remove Song");
          close = new JMenuItem("Close");
          importSong.addActionListener(this);
          removeSong.addActionListener(this);
          close.addActionListener(this);
          setJMenuBar(menuBar);
          menuBar.add(file);
          file.add(importSong);
          file.add(removeSong);
          file.addSeparator();
          file.add(close);
     public void tableChanged(TableModelEvent e)
     public void actionPerformed (ActionEvent e)
          if (e.getSource() == close)
               System.exit(0);
          else if (e.getSource() == importSong)
               try
                    //  Connect to the Database               
                    Class.forName( driver );
                    Connection connection = DriverManager.getConnection( url, userid, password );
                    EditDatabase.importMp3(connection);
               catch (Exception exception)
                    System.out.println("Fel: " + exception);
     public static void main(String[] args)
          TableFromDatabase frame = new TableFromDatabase();
          frame.setDefaultCloseOperation( EXIT_ON_CLOSE );
          frame.pack();
          frame.setVisible(true);
}Basicly the same as your with some few modifications.
What I want to know is how to update the table after I have imported a song to the database thru my importMp3() function? Please respond on a basic level. Any help is much appreciated!