Database Access in Java (Count field incorrect)

Question

Was given a stock tracking application to be edited for use as a Student/Admin login application which accesses a database and adds/deletes/edits student information. When I try to login, I get the following error: [Microsoft][OBDC Microsoft Access Driver]Count Field Incorrect
The driver was set up in the Admin tools in Windows XP.
The columns exist in the database.
//makeDB.java
  import java.sql.*;
  import java.io.*;
  public class MakeDB
    public static void main(String[] args) throws Exception
      Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
          String url = "jdbc:odbc:saad";
          Connection con = DriverManager.getConnection(url);
         Statement stmt = con.createStatement();
          // The following code deletes each index and table, if they exist.
          // If they do not exist, a message is displayed and execution continues.
          System.out.println("Dropping indexes & tables ...");
        try
               stmt.executeUpdate("DROP INDEX PK_StudentUserBridge ON StudentUserBridge");
         catch (Exception e)
               System.out.println("Could not drop primary key on saad table: "
                                 + e.getMessage());
        try
                 stmt.executeUpdate("DROP TABLE Student");
         catch (Exception e)
               System.out.println("Could not drop Student table: "
                                 + e.getMessage());
        try
                 stmt.executeUpdate("DROP TABLE Users");
         catch (Exception e)
               System.out.println("Could not drop Users table: "
                                 + e.getMessage());
        try
                 stmt.executeUpdate("DROP TABLE StudentUserBridge");
         catch (Exception e)
               System.out.println("Could not drop StudentUserBridge table: "
                                 + e.getMessage());
          ///////// Create the database tables /////////////
          System.out.println("\nCreating tables ............");
          // Create Stocks table with primary key index
        try
               System.out.println("Creating Student table with primary key index...");
               stmt.executeUpdate("CREATE TABLE Student ("
                                 +"IDNumber TEXT(8) NOT NULL "
                                 +"CONSTRAINT PK_Student PRIMARY KEY, "
                                 +"FirstName TEXT(50), "
                                 +"LastName TEXT(50)"
                                 +")");
         catch (Exception e)
               System.out.println("Exception creating Student table: "
                                 + e.getMessage());
          // Create Users table with primary key index
        try
               System.out.println("Creating Users table with primary key index...");
               stmt.executeUpdate("CREATE TABLE Users ("
                                 +"userID TEXT(20) NOT NULL "
                                +"CONSTRAINT PK_Users PRIMARY KEY, "
                                +"FirstName TEXT(30) NOT NULL, "
                                +"LastName TEXT(30) NOT NULL, "
                                     +"pswd LONGBINARY, "
                                +"email TEXT(30) NOT NULL, "
                                     +"admin BIT"
                                     +")");
         catch (Exception e)
               System.out.println("Exception creating Users table: "
                                 + e.getMessage());
          // Create UserStocks table with foreign keys to Users and Stocks tables
        try
               System.out.println("Creating StudentUserBridge table ...");
               stmt.executeUpdate("CREATE TABLE StudentUserBridge ("
                                 +"userID TEXT(20) "
                                   +"CONSTRAINT FK1_StudentUserBridge REFERENCES Users (userID), "
                                      +"IDNumber TEXT(8), "
                                   +"CONSTRAINT FK2_StudentUserBridge FOREIGN KEY (IDNumber) "
                                   +"REFERENCES Student (IDNumber)"
                                   +")");
         catch (Exception e)
               System.out.println("Exception creating StudentUserBridge table: "
                                 + e.getMessage());
          // Create UserStocks table primary key index
        try
               System.out.println("Creating StudentUserBridge table primary key index...");
               stmt.executeUpdate("CREATE UNIQUE INDEX PK_StudentUserBridge "
                                    +"ON StudentUserBridge (userID, IDNumber) "
                                    +"WITH PRIMARY DISALLOW NULL");
         catch (Exception e)
               System.out.println("Exception creating StudentUserBridge index: "
                                 + e.getMessage());
          // Create one administrative user with password as initial data
          String userID = "admin01";
          String FirstName = "Default";
          String LastName = "Admin";
          String initialPswd = "admin01";
          String email = "[email protected]";
          Password pswd = new Password(initialPswd);
          boolean admin = true;
        PreparedStatement pStmt =
                   con.prepareStatement("INSERT INTO Users VALUES (?,?,?,?,?,?)");
        try
             pStmt.setString(1, userID);
              pStmt.setString(2, FirstName);
              pStmt.setString(3, LastName);
            pStmt.setBytes(4, serializeObj(pswd));
            pStmt.setString(5, email);
              pStmt.setBoolean(6, admin);
              pStmt.executeUpdate();
          catch (Exception e)
               System.out.println("Exception inserting user: "
                                 + e.getMessage());
        pStmt.close();
          // Read and display all User data in the database.
        ResultSet rs = stmt.executeQuery("SELECT * FROM Users");
        System.out.println("Database created.\n");
        System.out.println("Displaying data from database...\n");
        System.out.println("Users table contains:");
        Password pswdFromDB;
        byte[] buf = null;
        while(rs.next())
               System.out.println("Logon ID         = "
                                 + rs.getString("userID"));
             System.out.println("Last name        = "
                               + rs.getString("FirstName"));
             System.out.println("First name       = "+rs.getString("LastName"));
             System.out.println("E-mail           = "+rs.getString("email"));
             System.out.println("Administrative   = "+rs.getBoolean("admin"));
             System.out.println("Initial password = "+initialPswd);
        // Do NOT use with JDK 1.2.2 using JDBC-ODBC bridge as
        // SQL NULL data value is not handled correctly.
            buf = rs.getBytes("pswd");
            if (buf != null)
                  System.out.println("Password Object  = "
                                  + (pswdFromDB=(Password)deserializeObj(buf)));
                  System.out.println("  AutoExpires    = "+ pswdFromDB.getAutoExpires());
                  System.out.println("  Expiring now   = "+ pswdFromDB.isExpiring());
                  System.out.println("  Remaining uses = "
                                    + pswdFromDB.getRemainingUses()+"\n");
              else
                  System.out.println("Password Object  = NULL!");
        rs = stmt.executeQuery("SELECT * FROM Student");
        if(!rs.next())
             System.out.println("Student table contains no records.");
          else
             System.out.println("Student table still contains records!");
        rs = stmt.executeQuery("SELECT * FROM StudentUserBridge");
        if(!rs.next())
             System.out.println("StudentUserBridge table contains no records.");
          else
             System.out.println("StudentUserBridge table still contains records!");
         stmt.close(); // closing Statement also closes ResultSet
    } // end of main()
     // Method to write object to byte array and then insert into prepared statement
    public static byte[] serializeObj(Object obj)
                              throws IOException
          ByteArrayOutputStream baOStream = new ByteArrayOutputStream();
        ObjectOutputStream objOStream = new ObjectOutputStream(baOStream);
        objOStream.writeObject(obj); // object must be Serializable
        objOStream.flush();
        objOStream.close();
        return baOStream.toByteArray(); // returns stream as byte array
     // Method to read bytes from result set into a byte array and then
     // create an input stream and read the data into an object
    public static Object deserializeObj(byte[] buf)
                                  throws IOException, ClassNotFoundException
         Object obj = null;
        if (buf != null)
          ObjectInputStream objIStream =
            new ObjectInputStream(new ByteArrayInputStream(buf));
          obj = objIStream.readObject(); // throws IOException, ClassNotFoundException
        return obj;
  } // end of class
//STLogon.java
import javax.swing.*;
import javax.swing.border.TitledBorder;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.io.*;
import java.sql.*;
public class STLogon extends JFrame implements ActionListener, Activator
    StudentDB db;
    User user = null;
    String userID;
    String password;
    JTextField userIDField;
    JPasswordField passwordField;
    JButton jbtLogon;
    public STLogon()
        super("Stock Tracker"); // call super (JFrame) constructor
          int width = 300;
          int height = 100;
        try{
             db = new StudentDB();
        catch(ClassNotFoundException ex){
                    JOptionPane.showMessageDialog(this,
                ex.getMessage(),
                "Class not found exception creating database object",
                JOptionPane.ERROR_MESSAGE);
                       System.exit(0);
        catch(SQLException ex){
                    JOptionPane.showMessageDialog(this,
                ex.getMessage(),
                "SQL exception creating database object",
                JOptionPane.ERROR_MESSAGE);
                       System.exit(0);
          // define GUI components
        JLabel label1 = new JLabel("User ID: ");
        userIDField = new JTextField(20);
        JLabel label2 = new JLabel("Password:   ");
        passwordField = new JPasswordField(20);
        passwordField.setEchoChar('*');
        jbtLogon = new JButton("Log on");
          // set up GUI
        JPanel userPanel= new JPanel(new BorderLayout());
        userPanel.add(label1,BorderLayout.CENTER);
        userPanel.add(userIDField,BorderLayout.EAST);
        JPanel pswdPanel= new JPanel(new BorderLayout());
        pswdPanel.add(label2,BorderLayout.CENTER);
        pswdPanel.add(passwordField,BorderLayout.EAST);
        JPanel buttonPanel= new JPanel(new FlowLayout());
        buttonPanel.add(jbtLogon);
        JPanel contentPanel= new JPanel(new BorderLayout());
        contentPanel.add(userPanel, BorderLayout.NORTH);
        contentPanel.add(pswdPanel, BorderLayout.CENTER);
        contentPanel.add(buttonPanel, BorderLayout.SOUTH);
         contentPanel.setBorder(new TitledBorder("Log on"));
        setContentPane(contentPanel);
        // add listeners
        jbtLogon.addActionListener(this);
        addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e)
                                   try {db.close();
                                catch(Exception ex)
                                System.exit(0);
          // Enable Enter key for each JButton
          InputMap map;
          map = jbtLogon.getInputMap();
          if (map != null){
               map.put(KeyStroke.getKeyStroke(KeyEvent.VK_ENTER,0,false), "pressed");
               map.put(KeyStroke.getKeyStroke(KeyEvent.VK_ENTER,0,true), "released");
        pack();
          if( width < getWidth())                    // prevent setting width too small
             width = getWidth();
          if(height < getHeight())               // prevent setting height too small
               height = getHeight();
          centerOnScreen(width, height);
       public void centerOnScreen(int width, int height)
         int top, left, x, y;
         // Get the screen dimension
         Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
         // Determine the location for the top left corner of the frame
         x = (screenSize.width - width)/2;
         y = (screenSize.height - height)/2;
         left = (x < 0) ? 0 : x;
         top = (y < 0) ? 0 : y;
         // Set the frame to the specified location & size
       this.setBounds(left, top, width, height);
     private boolean validUser(String userID,String password)
                    throws PasswordException,SQLException,IOException,ClassNotFoundException
          boolean userOK = false;
          user = db.getUser(userID); // get user object from DB for this ID
          if(user != null)
               user.validate(password); // throws PasswordException
               userOK = true;
               if(user.pswdAutoExpires())     // if tracking uses
                    db.updUser(user);          // update DB for this use
         return userOK;
    private void doStockActivity()throws PasswordException,SQLException,
                                                  IOException,ClassNotFoundException
        StockTracker f = new StockTracker(user,this,db);
        f.pack();
        this.setVisible(false);
        f.setVisible(true);
    public void activate()
        this.setVisible(true);
        userIDField.setText("");
        userIDField.requestFocus();
        user = null;
    public void actionPerformed(ActionEvent e)
          try
               userID = userIDField.getText();
            if(userID.equals(""))
                       JOptionPane.showMessageDialog(this,
                        "Please enter a valid user ID.",
                       "Missing User ID.",
                       JOptionPane.ERROR_MESSAGE);
                   userIDField.requestFocus();
               else
                    password = new String(passwordField.getPassword());
                 if(password.equals(""))
                            JOptionPane.showMessageDialog(this,
                             "Please enter a valid password.",
                            "Missing Password.",
                            JOptionPane.ERROR_MESSAGE);
                        passwordField.requestFocus();
                    else
                         try
                              // See if userID exists and validate password
                              if(validUser(userID,password))
                               if(user.pswdIsExpiring())
                                          JOptionPane.showMessageDialog(this,
                                                         user.getUserID()+" logon successful; "
                                            +user.getPswdUses()+" use(s) remaining.");
                                if(e.getSource() == jbtLogon)
                                           doStockActivity();
                           else
                                JOptionPane.showMessageDialog(this, "Invalid user.");
                         catch (PasswordExpiredException ex)
                              JPasswordField pf1 = new JPasswordField();
                              JPasswordField pf2 = new JPasswordField();
                              Object[] message1 = new Object[]
                                        {"Password has expired. Please enter a new password.", pf1};
                              Object[] options = new String[] {"OK", "Cancel"};
                              JOptionPane op1 = new JOptionPane(message1,
                                                                 JOptionPane.WARNING_MESSAGE,
                                                          JOptionPane.OK_CANCEL_OPTION, null, options);
                              JDialog dialog1 = op1.createDialog(null, "Change Password");
                              dialog1.show();
                              if(op1.getValue() != null && options[0].equals(op1.getValue()))
                                   String pswd1 = new String(pf1.getPassword());
                                   if(pswd1 != null)
                                       Object[] message2 = new Object[]
                                                           {"Please verify new password.", pf2};
                                        JOptionPane op2 = new JOptionPane(message2,
                                                                           JOptionPane.WARNING_MESSAGE,
                                                                   JOptionPane.OK_CANCEL_OPTION,
                                                                   null, options);
                                        JDialog dialog2 = op2.createDialog(null, "Verify Password");
                                        dialog2.show();
                                        if(op2.getValue() != null && options[0].equals(op2.getValue()))
                                             String pswd2 = new String(pf2.getPassword());
                                             if(pswd2 != null)
                                                  if(pswd1.equals(pswd2))
                                                    user.changePassword(password, pswd1);
                                                       db.updUser(user);
                                                       doStockActivity();
                                                  else
                                                       JOptionPane.showMessageDialog(this,
                                                      "Both passwords are not identical.",
                                                     "Password not changed",
                                                     JOptionPane.ERROR_MESSAGE);
             userIDField.setText("");
            passwordField.setText("");
            userIDField.requestFocus();
        }// end of try
        catch (PasswordUsedException ex)
            JOptionPane.showMessageDialog(this,
                ex.getMessage(),
                "Password Previously Used. Try again.",
                JOptionPane.ERROR_MESSAGE);
        catch (PasswordSizeException ex)
            JOptionPane.showMessageDialog(this,
                ex.getMessage(),
                "Invalid password size. Try again.",
                JOptionPane.ERROR_MESSAGE);
        catch (PasswordInvalidFormatException ex)
            if(ex.getCount() > 2) // allows only 3 tries, then exits program
                 System.exit(0);
            else
                 JOptionPane.showMessageDialog(this,ex.getMessage()+", count:"+ex.getCount(),
                                                    "Invalid password format. Try again.",
                                                          JOptionPane.ERROR_MESSAGE);
        catch (PasswordInvalidException ex)
            if(ex.getCount() > 2) // allows only 3 tries, then exits program
                 System.exit(0);
            else
                 JOptionPane.showMessageDialog(this,ex.getMessage()+", count:"+ex.getCount(),
                                                    "Invalid password. Try again.",
                                                          JOptionPane.ERROR_MESSAGE);
        catch (PasswordException ex)
            JOptionPane.showMessageDialog(this,
                ex.getMessage(),
                "PasswordException.",
                JOptionPane.ERROR_MESSAGE);
        catch (IOException ex)
            JOptionPane.showMessageDialog(this,
                ex.getMessage(),
                "IOException.",
                JOptionPane.ERROR_MESSAGE);
        catch (SQLException ex)
            JOptionPane.showMessageDialog(this,
                ex.getMessage(),
                "SQLException.",
                JOptionPane.ERROR_MESSAGE);
        catch (ClassNotFoundException ex)
            JOptionPane.showMessageDialog(this,
                ex.getMessage(),
                "ClassNotFoundException.",
                JOptionPane.ERROR_MESSAGE);
    public static void main(String[] argv)
          final STLogon f = new STLogon();
          f.setVisible(true);
//StudentDB.java
import java.io.*;
import java.sql.*;
import java.util.*;
public class StudentDB
     private Connection con = null;
     // Constructor; makes database connection
    public StudentDB() throws ClassNotFoundException,SQLException
          if(con == null)
               String url = "jdbc:odbc:saad";
             try
                  Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
               catch(ClassNotFoundException ex)
                    throw new ClassNotFoundException(ex.getMessage() +
                              "\nCannot locate sun.jdbc.odbc.JdbcOdbcDriver");
             try
                    con = DriverManager.getConnection(url);
               catch(SQLException ex)
                    throw new SQLException(ex.getMessage()+
                              "\nCannot open database connection for "+url);
     // Close makes database connection; null reference to connection
     public void close() throws SQLException,IOException,ClassNotFoundException
          con.close();
           con = null;
     // Method to serialize object to byte array
    private byte[] serializeObj(Object obj) throws IOException
          ByteArrayOutputStream baOStream = new ByteArrayOutputStream();
        ObjectOutputStream objOStream = new ObjectOutputStream(baOStream);
        objOStream.writeObject(obj); // object must be Serializable
        objOStream.flush();
        objOStream.close();
        return baOStream.toByteArray(); // returns stream as byte array
     // Method to deserialize bytes from a byte array into an object
    private Object deserializeObj(byte[] buf)
                         throws IOException, ClassNotFoundException
         Object obj = null;
        if (buf != null)
               ObjectInputStream objIStream =
                  new ObjectInputStream(new ByteArrayInputStream(buf));
            obj = objIStream.readObject(); //IOException, ClassNotFoundException
        return obj;
     // Methods for adding a record to a table
    // add to the Student Table
     public void addStudent(String IDNumber, String FirstName, String LastName)
                 throws SQLException, IOException, ClassNotFoundException
          Statement stmt = con.createStatement();
           stmt.executeUpdate("INSERT INTO Student VALUES ('"
                             +IDNumber+"'"+",'"+FirstName+"'"+",'"+LastName+"')");
           stmt.close();
     // add to the Users table
     public boolean addUser(User user) throws SQLException,IOException,
                                              ClassNotFoundException
       boolean result = false;
      String dbUserID;
      String dbLastName;
      String dbFirstName;
      Password dbPswd;
      String dbemail;
      boolean isAdmin;
      dbUserID = user.getUserID();
      if(getUser(dbUserID) == null)
            dbLastName = user.getFirstName();
            dbFirstName = user.getLastName();
          Password pswd = user.getPassword();
//          dbemail = user.getEmail();
            isAdmin = user.isAdmin();
          PreparedStatement pStmt = con.prepareStatement(
              "INSERT INTO Users VALUES (?,?,?,?,?,?)");
          pStmt.setString(1, dbUserID);
          pStmt.setString(2, dbFirstName);
          pStmt.setString(3, dbLastName);
          pStmt.setBytes(4, serializeObj(pswd));
//          pStmt.setString(5, dbemail);
          pStmt.setBoolean(5, isAdmin);
          pStmt.executeUpdate();
          pStmt.close();
          result = true;
       else
            throw new IOException("User exists - cannot add.");
       return result;
     // add to the UserStocks table
     public void addStudentUserBridge(String userID, String IDNumber)
                 throws SQLException,IOException,ClassNotFoundException
          Statement stmt = con.createStatement();
           stmt.executeUpdate("INSERT INTO StudentUserBridge VALUES ('"
                             +userID+"'"
                             +",'"+IDNumber+"')");
           stmt.close();
     // Methods for updating a record in a table
    // updating the Users Table
     public boolean updUser(User user) throws SQLException,IOException,
                                              ClassNotFoundException
       boolean result = false;
         String dbUserID;
      String dbLastName;
      String dbFirstName;
      Password dbPswd;
      String dbemail;
      boolean isAdmin;
      dbUserID = user.getUserID();
      if(getUser(dbUserID) != null)
            dbLastName = user.getFirstName();
            dbFirstName = user.getLastName();
          Password pswd = user.getPassword();
//          dbemail = user.getEmail();
            isAdmin = user.isAdmin();
          PreparedStatement pStmt = con.prepareStatement("UPDATE Users SET FirstName = ?,"
                                       +" LastName = ?, pswd = ?, email = ?, admin = ? WHERE userID = ?");
          pStmt.setString(1, dbFirstName);
          pStmt.setString(2, dbLastName);
          pStmt.setBytes(3, serializeObj(pswd));
//          pStmt.setString(4, dbemail);
          pStmt.setBoolean(4, isAdmin);
          pStmt.setString(5, dbUserID);
          pStmt.executeUpdate();
          pStmt.close();
          result = true;
       else
            throw new IOException("User does not exist - cannot update.");
       return result;
     // Methods for deleting a record from a table
    // delete a record from the Student Table
     private void delStudent(String IDNumber)
                  throws SQLException,IOException,ClassNotFoundException
          Statement stmt = con.createStatement();
           stmt.executeUpdate("DELETE FROM Student WHERE "
                             +"IDNumber = '"+IDNumber+"'");
        stmt.close();
    // delete a record from the Users Table
     public void delUser(User user) throws SQLException,IOException,
                                              ClassNotFoundException
           String dbUserID;
        String stockSymbol;
          Statement stmt = con.createStatement();
          try {
               con.setAutoCommit(false);
               dbUserID = user.getUserID();
               if(getUser(dbUserID) != null)  // verify user exists in database
                     ResultSet rs1 = stmt.executeQuery("SELECT userID, IDNumber "
                                       +"FROM StudentUserBridge WHERE userID = '"+dbUserID+"'");
                     while(rs1.next())
                     try
                         stockSymbol = rs1.getString("IDNumber");
                              delUserStocks(dbUserID, stockSymbol);
                        catch(SQLException ex)
                              throw new SQLException("Deletion of user student failed: "
                                                    +ex.getMessage());
                      } // end of loop thru UserStocks
                try
                {  // holdings deleted, now delete user
                         stmt.executeUpdate("DELETE FROM Users WHERE "
                                       +"userID = '"+dbUserID+"'");
                   catch(SQLException ex)
                         throw new SQLException("User deletion failed: "+ex.getMessage());
                 else
                      throw new IOException("User not found in database - cannot delete.");
               try
                  con.commit();
                catch(SQLException ex)
                    throw new SQLException("Transaction commit failed: "+ex.getMessage());
          catch (SQLException ex)
               try
                    con.rollback();
               catch (SQLException sqx)
                    throw new SQLException("Transaction failed then rollback failed: "
                                          +sqx.getMessage());
               // Transaction failed, was rolled back
               throw new SQLException("Transaction failed; was rolled back: "
                                     +ex.getMessage());
        stmt.close();
    // delete a record from the StudentUserBridge Table
     public void delUserStocks(String userID, String stockSymbol)
                 throws SQLException,IOException,ClassNotFoundException
          Statement stmt = con.createStatement();
         ResultSet rs;
           stmt.executeUpdate("DELETE FROM StudentUserBridge WHERE "
                             +"userID = '"+userID+"'"
                             +"AND IDNumber = '"+stockSymbol+"'");
           rs = stmt.executeQuery("SELECT IDNumber FROM StudentUserBridge "
                                 +"WHERE IDNumber = '"+stockSymbol+"'");
             if(!rs.next()) // no users have this stock
//               delStock(stockSymbol);
           stmt.close();
     // Methods for listing record data from a table
     // Ordered by:
     //           methods that obtain individual field(s),
     //           methods that obtain a complete record, and
     //           methods that obtain multiple records
     // Methods to access one or more individual fields
    // get a stock description from the Stocks Table
     public String getStockDesc(String stockSymbol)
                   throws SQLException, IOException, ClassNotFoundException
          Statement stmt = con.createStatement();
            String stockDesc = null;
           ResultSet rs = stmt.executeQuery("SELECT IDNumber, name FROM Student "
                                           +"WHERE IDNumber = '"+stockSymbol+"'");
           if(rs.next())
               stockDesc = rs.getString("IDNumber");
           rs.close();
           stmt.close();
            return stockDesc;
     // Methods to access a complete record
    // get User data from the Users Table
     public User getUser(String UserID) throws SQLException, IOException,
                                               ClassNotFoundException
       Statement stmt = con.createStatement();
         String dbUserID;
      String dbLastName;
      String dbFirstName;
      Password dbPswd;
      String dbemail;
      boolean isAdmin;
      byte[] buf = null;
      User user = null;
      ResultSet rs = stmt.executeQuery("SELECT * FROM Users WHERE userID = '"
                                      +UserID+"'");
      if(rs.next())
            dbUserID = rs.getString("userID");
             dbFirstName = rs.getString("FirstName");
             dbLastName = rs.getString("LastName");
             dbemail = rs.getString("email");
        // Do NOT use with JDK 1.2.2 using JDBC-ODBC bridge as
        // SQL NULL data value is not handled correctly.
          buf = rs.getBytes("pswd");
             dbPswd = (Password)deserializeObj(buf);
             isAdmin = rs.getBoolean("admin");
            user = new User(dbUserID,dbFirstName,dbLastName,dbPswd,isAdmin);
      rs.close();
      stmt.close();
       return user; // User object created for userID
     // Methods to access a list of records
    // get list of selected fields for all records from the Users Table
     public ArrayList listUsers() throws SQLException,IOException,
                                         ClassNotFoundException
      ArrayList aList = new ArrayList();
       Statement stmt = con.createStatement();
      ResultSet rs = stmt.executeQuery("SELECT userID, FirstName, LastName, admin "
                                      +"FROM Users ORDER BY userID");
      while(rs.next())
            aList.add(rs.getString("userID"));
              aList.add(rs.getString("FirstName"));
              aList.add(rs.getString("LastName"));
              aList.add(new Boolean(rs.getBoolean("admin")));
      rs.close();
      stmt.close();
      return aList;
    // get all fields in all records for a given user from the Userstocks Table
     public ArrayList listUserStocks(String userID) throws SQLException,IOException,
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         

Answer 1

saaddani wrote:
No information popped up in the console window before, during, or after the error was given. The program compiled and ran and therefore no error information was provided in the complier window either.
If I am missing what you are asking then please provide instructions as to how to find this error information. You are posting the error message for the exception but not printing the stack trace.
Far as I can tell you are printing more information with each exception (for example "Exception creating Users table") but you did not post what that was, that info would localize the problem.
As a guess the problem is when you extract the fields via the query. You are using named values rather than indexes and you use "select *" rather than specifically naming the columns. Some databases (for example Oracle), require that using names must be in exactly the same order as the query returns them. You have no idea what that order is because you use "select *"
Finally it would be a LOT easier if you wrote classes that did nothing but the database operations. NO GUI CODE. You then test that code to make sure it works. Once that code works then you write gui code which uses those classes. Besides making it easier to understand you are also more likely to get assistance since there is less code to look at.