Error "No operations Allowed after statement closed"

Question

Hi,
I have a little program that I want to grab a list of names out of MySQL (it does) and when I click on the name I want it to display some information about the person. This is where I run into the error, when I click on a name in the list box it gives me the error "No operations allowed after statement closeed". I'm not sure where my statement is being closed, in my listSelectionListerner I never close the statement so I'm not sure whats heppening. Heres the code:
import java.awt.*;
import javax.swing.*;
import javax.swing.event.*;
import java.sql.*;
import java.util.*;
public class Gifts extends JFrame
     static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";
     static final String DATABASE_URL = "jdbc:mysql://localhost/test?user=root&password=root";
   private JList nameList;
     private JTextArea statList;
     private JButton add;
   private Container container;
     private JPanel nameListPanel, statListPanel, buttonPanel;
     private Connection conn;
     private Statement stat;
   public Gifts()
          super( "Spiritual Gift Database" );
          try
               Class.forName(JDBC_DRIVER);
               conn = DriverManager.getConnection(DATABASE_URL);
               stat = conn.createStatement();
               ResultSet rs = stat.executeQuery("SELECT heading1 FROM demo");
               Vector vector1 = new Vector();
               while(rs.next()) vector1.add(rs.getObject(1));
               container = getContentPane();
           container.setLayout( new FlowLayout() );
               nameListPanel = new JPanel();
               statListPanel = new JPanel();
               buttonPanel = new JPanel();
           nameList = new JList(vector1);
           nameList.setVisibleRowCount( 9 );
               nameList.setPrototypeCellValue("XXXXXXXXXXXX");
               nameList.addListSelectionListener(
                    new ListSelectionListener()
                         public void valueChanged(ListSelectionEvent event)
                              try
                                   ResultSet resultSet = stat.executeQuery("SELECT * FROM demo");
                                   StringBuffer results = new StringBuffer();
                                   ResultSetMetaData metaData = resultSet.getMetaData();
                                   int numberOfColumns = metaData.getColumnCount();
                                   for(int i = 1; i<=numberOfColumns; i++)
                                   results.append(metaData.getColumnName(i) + "\t");
                                   results.append("\n");
                                   while (resultSet.next())
                                        for(int i = 1; i<= numberOfColumns; i++)
                                        results.append(resultSet.getObject(i) + "\t");
                                        results.append("\n");
                              catch(SQLException sqlException)
                                   JOptionPane.showMessageDialog(null,sqlException.getMessage(),
                                   "Database Error1", JOptionPane.ERROR_MESSAGE);
                                   System.exit(1);
               statList = new JTextArea(10,20);
               add = new JButton("Add Entry");
           nameList.setSelectionMode( ListSelectionModel.SINGLE_SELECTION );
               statListPanel.add(new JScrollPane(statList));   
           nameListPanel.add( new JScrollPane(nameList));
               buttonPanel.add(add);
               container.add(nameListPanel, BorderLayout.EAST);
               container.add(statListPanel, BorderLayout.WEST);
               container.add(buttonPanel);
           setSize( 400, 300 );
           setVisible( true );
          }//end try block
          catch(SQLException sqlException)
               JOptionPane.showMessageDialog(null,sqlException.getMessage(),
               "Database Error1", JOptionPane.ERROR_MESSAGE);
               System.exit(1);
          catch (ClassNotFoundException classNotFound)
               JOptionPane.showMessageDialog(null, classNotFound.getMessage(),
               "Driver Not Found", JOptionPane.ERROR_MESSAGE);
               System.exit(1);
          finally
               try
                    stat.close();
                    conn.close();
               catch (SQLException sqlException)
                    JOptionPane.showMessageDialog(null,
                    sqlException.getMessage(), "Database Error2",
                    JOptionPane.ERROR_MESSAGE);
                    System.exit(1);
     }//end Gifts()
   public static void main( String args[] )
      Gifts application = new Gifts();
      application.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
}

Answer 1

The fact is,
the finally statement is reached after the whole object is initialized,
that means that your statement is closed, before you make an action
with you ListSelectionListener.
Try working with a connect and disconnect method, or something like that,
which are called during your valueChangeg() method!