Ms Access problems with Jdbc Odbc!!!

Question

Hi again people,
Im creating a GUI swing project connecting a database (MsAccess) to a dialog using the bridge driver,
The GUI is coming up but im getting runtime errors and the data does not go to the fields, the dialog and connection are in two files:
import java.awt.*;
import java.awt.event.*;
import java.sql.*; //SQL package for the statements
import javax.swing.*;
class DatabaseMan
     public ResultSet m_resultSet; //recordset resulting from SQL query
     public ResultSetMetaData m_rsmd; //used to get general info about the columns
     private int m_nNumberOfFields; //number of fields in a recordset
     private Connection conn;
     private Statement stmt;
     public DatabaseMan(String strSQLQuery)
          try
               Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");          
               try               //establish connection to the database
                    //try to get connection to the database
                    conn = DriverManager.getConnection("jdbc:odbc:db1");
                    //this is not where we update the database so we make it read only
                    stmt = conn.createStatement( ResultSet.TYPE_SCROLL_INSENSITIVE,
                                                                 ResultSet.CONCUR_READ_ONLY);                                   
                    m_resultSet = stmt.executeQuery(strSQLQuery);
               catch(SQLException exSQL)
                    System.err.println("\n\n\t\t ***SQLException has" +
                                             "been caught ***\n\n");
               while ( exSQL != null)
                    System.err.println("\nSQLState : " + exSQL.getSQLState() );
               System.err.println("\nMessage : " + exSQL.getMessage() );
                         System.err.println("\nVendor code : "+ exSQL.getErrorCode() );
                         System.err.println("\n");
                         exSQL = exSQL.getNextException();
          catch( ClassNotFoundException e)
               System.err.print("\n\n\tClassNotFoundException has"
                                   +" been caught");
               System.err.println( e.getMessage());
          catch( java.lang.Exception ex )
               ex.printStackTrace();
     public void CloseConnection() //close connection to database
          try
                    conn.close();
                    stmt.close();
                    m_resultSet.close(); //release the resources
               catch (SQLException exSQL )
                    System.out.println("SQL Exception: " + exSQL.getMessage());
                    exSQL.printStackTrace(System.out);
     public int getNoFields()
          return m_nNumberOfFields;
} //end of DatabaseMan.java
import java.awt.*;
import java.awt.event.*;
import java.sql.*;
import DatabaseMan;
import javax.swing.*;
class DBviewer extends JDialog implements ActionListener
     //JButtons to create toolbar
     private JButton m_buttonFirst;
     private JButton m_buttonNext;
     private JButton m_buttonPrevious;
     private JButton m_buttonLast;
     private JButton m_buttonClose;
     private JButton m_mainbuttonClose;
     //textfields to transfer the data from database
     private JTextField m_name;
     private JTextField m_age;
     private JTextField m_weight;
     private JTextField m_professionalism;
     private JTextField m_speed;
     private JTextField m_acceleration;
     private JTextField m_jump;
     private JTextField m_stamina;
     private JTextField m_bravery;
     private JTextField m_fitness;
     private JTextField m_experience;
     //labels to identify the textfields
     private JLabel m_labelname;
     private JLabel m_labelage;
     private JLabel m_labelweight;
     private JLabel m_labelspeed;
     private JLabel m_labelacceleration;
     private JLabel m_labelprofessionalism;
     private JLabel m_labeljump;
     private JLabel m_labelstamina;
     private JLabel m_labelbravery;
     private JLabel m_labelfitness;
     private JLabel m_labelexperience;
     DatabaseMan m_DatabaseMan;
     private String strSQLQuery1;
     private String type1 = new String("");
     public DBviewer(Frame parent, String caption, boolean bModal, String type)
          super(parent,caption,true);
          setSize(600,400);
          setLocation( new Point(150 , 150 )); //position it pops up on screen.
          setResizable(false);
          strSQLQuery1 = new String("");
          type1 = type;
          //SQL query to show the horse database
          if(type =="Horse")
               strSQLQuery1 ="SELECT *" +
                              "FROM HORSE";
               buildHorseGUI();
          if(type =="Jockey")
               strSQLQuery1 ="SELECT *" +
                              "FROM JOCKEY"+
                              " ORDER BY NAME";
               buildJockeyGUI();                         
          if(type =="Course")
               strSQLQuery1 ="SELECT *" +
               "FROM RACECOURSE"+
                              " ORDER BY NAME";
               buildCourseGUI();
          m_DatabaseMan = new DatabaseMan(strSQLQuery1);
          /*try
          {//reset values with default move up to top later
               if(m_DatabaseMan.m_resultSet.first())
                    transferData(type1);
          catch( SQLException exSQL)
               System.out.println("SQL Exception: " + exSQL.getMessage());
               exSQL.printStackTrace(System.out);
     public void buildHorseGUI() //construct the horse GUI
          buildDefaultGUI(); //build default buttons and toolbar
          m_labelname = new JLabel(" Horse Name:",JLabel.CENTER);
          m_labelname.setBackground(Color.blue);
          m_labelname.setForeground(Color.white);
          m_labelage = new JLabel("Age: ",JLabel.CENTER);
          m_labelage.setBackground(Color.blue);
          m_labelage.setForeground(Color.white);     
          m_labelweight = new JLabel("Weight(p): ",JLabel.CENTER);
          m_labelweight.setBackground(Color.blue);
          m_labelweight.setForeground(Color.white);
          m_labelspeed = new JLabel("Speed:",JLabel.CENTER);
          m_labelspeed.setBackground(Color.blue);
          m_labelspeed.setForeground(Color.white);
          m_labelacceleration = new JLabel("Acceleration:",JLabel.CENTER);
          m_labelacceleration.setBackground(Color.blue);
          m_labelacceleration.setForeground(Color.white);
          m_labelprofessionalism = new JLabel("Professionalism:",JLabel.CENTER);
          m_labelprofessionalism.setBackground(Color.blue);
          m_labelprofessionalism.setForeground(Color.white);
          m_labeljump = new JLabel("Jump:",JLabel.CENTER);
          m_labeljump.setBackground(Color.blue);
          m_labeljump.setForeground(Color.white);
          m_labelstamina = new JLabel("Stamina:",JLabel.CENTER);
          m_labelstamina.setBackground(Color.blue);
          m_labelstamina.setForeground(Color.white);     
          m_labelbravery = new JLabel("Bravery:",JLabel.CENTER);
          m_labelbravery.setBackground(Color.blue);
          m_labelbravery.setForeground(Color.white);
          m_labelfitness = new JLabel("Fitness:",JLabel.CENTER);
          m_labelfitness.setBackground(Color.blue);
          m_labelfitness.setForeground(Color.white);     
          m_labelexperience = new JLabel("Experience",JLabel.CENTER);
          m_labelexperience.setBackground(Color.blue);
          m_labelexperience.setForeground(Color.white);          
          //creation of textfields to hold the data
          //making them non-editable and b/ground of black with white text
          m_name = new JTextField(20);
          m_name.setEditable(false);
          m_name.setBackground(Color.black);
          m_name.setForeground(Color.white);
          m_age = new JTextField(2);
          m_age.setEditable(false);
          m_age.setBackground(Color.black);
          m_age.setForeground(Color.white);
          m_weight = new JTextField(3);
          m_weight.setEditable(false);
          m_weight.setBackground(Color.black);
          m_weight.setForeground(Color.white);
          m_speed = new JTextField(2);
          m_speed.setEditable(false);
          m_speed.setBackground(Color.black);
          m_speed.setForeground(Color.white);
          m_acceleration = new JTextField(2);
          m_acceleration.setEditable(false);
          m_acceleration.setBackground(Color.black);
          m_acceleration.setForeground(Color.white);
          m_professionalism = new JTextField(2);
          m_professionalism.setEditable(false);
          m_professionalism.setBackground(Color.black);
          m_professionalism.setForeground(Color.white);
          m_jump = new JTextField(2);
          m_jump.setEditable(false);
          m_jump.setBackground(Color.black);
          m_jump.setForeground(Color.white);
          m_stamina = new JTextField(2);
          m_stamina.setEditable(false);
          m_stamina.setBackground(Color.black);
          m_stamina.setForeground(Color.white);
          m_bravery = new JTextField(2);
          m_bravery.setEditable(false);
          m_bravery.setBackground(Color.black);
          m_bravery.setForeground(Color.white);
          m_fitness = new JTextField(2);
          m_fitness.setEditable(false);
          m_fitness.setBackground(Color.black);
          m_fitness.setForeground(Color.white);
          m_experience = new JTextField(2);
          m_experience.setEditable(false);
          m_experience.setBackground(Color.black);
          m_experience.setForeground(Color.white);
          //create a panel to hold this data
          Panel data = new Panel();
          data.setLayout(new GridLayout(0,4));
          data.setBackground(Color.blue);
          data.add(m_labelname);
          data.add(m_name);
          data.add(m_labelage);
          data.add(m_age);
          data.add(m_labelweight);
          data.add(m_weight);
          data.add(m_labelspeed);
          data.add(m_speed);
          data.add(m_labelacceleration);
          data.add(m_acceleration);
          data.add(m_labelprofessionalism);
          data.add(m_professionalism);
          data.add(m_labeljump);
          data.add(m_jump);
          data.add(m_labelstamina);
          data.add(m_stamina);
          data.add(m_labelbravery);
          data.add(m_bravery);
          data.add(m_labelfitness);
          data.add(m_fitness);
          data.add(m_labelexperience);
          data.add(m_experience);
          getContentPane().add(data, BorderLayout.CENTER);
     public void buildDefaultGUI() //construct the default components for GUI
          JToolBar wndToolBar = new JToolBar();
          wndToolBar.setBackground(Color.green);
          wndToolBar.setFloatable(false);
          m_buttonFirst = new JButton( new ImageIcon( "graphic/myFirst.gif" ) );
          m_buttonPrevious = new JButton(new ImageIcon( "graphic/myPrevious.gif" ) );
          m_buttonNext = new JButton(new ImageIcon( "graphic/myNext.gif" ) );
          m_buttonLast = new JButton(new ImageIcon( "graphic/myLast.gif" ) );
          m_buttonClose = new JButton(new ImageIcon( "graphic/myClose.gif" ) );
          m_mainbuttonClose = new JButton("CLOSE");
          // implement action listener
          m_buttonFirst.addActionListener(this);
          m_buttonPrevious.addActionListener(this);
          m_buttonNext.addActionListener(this);
          m_buttonLast.addActionListener(this);
          m_buttonClose.addActionListener(this);
          m_mainbuttonClose.addActionListener(this);
          //set the tool tips for each of the button
          m_buttonFirst.setToolTipText( "Display first record" );
          m_buttonPrevious.setToolTipText( "Display previous record" );
          m_buttonNext.setToolTipText( "Display next record" );
          m_buttonLast.setToolTipText( "Display last record" );
          m_buttonClose.setToolTipText( "Close this window and return to game" );
          m_mainbuttonClose.setToolTipText( "Close this window and return to game" );
          m_mainbuttonClose.setBackground(Color.green);
          //add these buttons to the toolbar
          wndToolBar.add( m_buttonFirst );
          wndToolBar.add( m_buttonPrevious );
          wndToolBar.add( m_buttonNext );
          wndToolBar.add( m_buttonLast );
          wndToolBar.addSeparator(); //separator in the toolbar
          wndToolBar.add( m_buttonClose );
          getContentPane().add(wndToolBar, BorderLayout.NORTH);
          getContentPane().add(m_mainbuttonClose, BorderLayout.SOUTH);
     public void buildCourseGUI() //construct the course GUI
          buildDefaultGUI();
     public void buildJockeyGUI() //construct the jockey GUI
          buildDefaultGUI();
     public void actionPerformed( ActionEvent evt)
          //button first record is pressed
          if( evt.getSource() == m_buttonFirst )
               try
                    if( m_DatabaseMan.m_resultSet.first() )
                         transferData(type1);
               catch (SQLException exSQL )
                    System.err.println( exSQL.toString() );
          //button next record is pressed
          if( evt.getSource() == m_buttonNext )
               try
                    if(!m_DatabaseMan.m_resultSet.isLast())
                         if(m_DatabaseMan.m_resultSet.next())
                              transferData(type1);
               catch (SQLException exSQL )
                    System.err.println( exSQL.toString() );
          //previous button is pressed
          if( evt.getSource() == m_buttonPrevious )
               try
                    if( !m_DatabaseMan.m_resultSet.first())
                         if(m_DatabaseMan.m_resultSet.previous())
                              transferData(type1);
               catch (SQLException exSQL )
                    System.err.println( exSQL.toString() );
          //last button is pressed
          if( evt.getSource() == m_buttonLast )
               try
                    if(m_DatabaseMan.m_resultSet.last())
                         transferData(type1);
               catch (SQLException exSQL )
                    System.err.println( exSQL.toString() );
          // close button(s) pressed
          if( evt.getSource() == m_buttonClose)
               setVisible( false );
               dispose(); //return the dialog window resources
               m_DatabaseMan.CloseConnection();
          if( evt.getSource() == m_mainbuttonClose)
               setVisible( false );
               dispose(); //return the dialog window resources
               m_DatabaseMan.CloseConnection();
     public void transferData(String type1) throws SQLException //return a String
          if(type1 =="Horse")
               //transfer horse details
               m_name.setText(m_DatabaseMan.m_resultSet.getString("NAME"));
               m_professionalism.setText(m_DatabaseMan.m_resultSet.getString("PROFESSIONALISM"));
               m_speed.setText(m_DatabaseMan.m_resultSet.getString("SPEED"));
               m_stamina.setText(m_DatabaseMan.m_resultSet.getString("STAMINA"));
               m_weight.setText(m_DatabaseMan.m_resultSet.getString("WEIGHT"));
               m_experience.setText(m_DatabaseMan.m_resultSet.getString("EXPERIENCE"));
               m_fitness.setText(m_DatabaseMan.m_resultSet.getString("FITNESS"));
               m_jump.setText(m_DatabaseMan.m_resultSet.getString("JUMP"));
               m_age.setText(m_DatabaseMan.m_resultSet.getString("AGE"));
               m_bravery.setText(m_DatabaseMan.m_resultSet.getString("BRAVERY"));
               m_acceleration.setText(m_DatabaseMan.m_resultSet.getString("ACCELERATION"));
          if(type1 =="Jockey")
               m_name.setText(m_DatabaseMan.m_resultSet.getString("NAME"));
               m_age.setText(m_DatabaseMan.m_resultSet.getString("AGE"));
          if(type1 =="Course")
               //transfer course details not implemented yet
} //end of class DBviewer
I ve set up an odbc driver and the database has data in it but I still get this run time error an no data is transfered to the dialog box
java.lang.StringIndexOutOfBoundsException: String index out of range: -1
at java.lang.String.substring(String.java:1525)
at sun.jdbc.odbc.JdbcOdbcResultSet.reWordAsCountQuery(JdbcOdbcResultSet.java:6268)
at sun.jdbc.odbc.JdbcOdbcResultSet.calculateRowCount(JdbcOdbcResultSet.java:6061)
at sun.jdbc.odbc.JdbcOdbcResultSet.initialize(JdbcOdbcResultSet.java:150)
at sun.jdbc.odbc.JdbcOdbcStatement.getResultSet(JdbcOdbcStatement.java:420)
at sun.jdbc.odbc.JdbcOdbcStatement.executeQuery(JdbcOdbcStatement.java:250)
at DatabaseMan.<init>(DatabaseMan.java:34)
at DBviewer.<init>(DBviewer.java:83)
at MainWindow.actionPerformed(MainWindow.java:266)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1450)
at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1504)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:378)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:250)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:216)
at java.awt.Component.processMouseEvent(Component.java:3715)
at java.awt.Component.processEvent(Component.java:3544)
at java.awt.Container.processEvent(Container.java:1164)
at java.awt.Component.dispatchEventImpl(Component.java:2593)
at java.awt.Container.dispatchEventImpl(Container.java:1213)
at java.awt.Component.dispatchEvent(Component.java:2497)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:2451)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:2216)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:2125)
at java.awt.Container.dispatchEventImpl(Container.java:1200)
at java.awt.Window.dispatchEventImpl(Window.java:914)
at java.awt.Component.dispatchEvent(Component.java:2497)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:339)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:131)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:98)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:85)
Im really stuck!!! any suggestions? thanks in advance

Answer 1

Thank you for your response and sorry for the length
of code,
Thats was my first idea that it was asking for
or something I dont have but I checked my database and
I dont have any unusually large data entries (most
between 8-15 letters, the others are numbers) could it
be something wrong with how I've entered the database
in MsAccess, or am i barking up the wrong tree again!
Many thanks
RobI think you've misunderstood me. This has nothing to do with unusually large data entries, but rather the opposite. You are wrongly expecting data that is shorter than you think. When you call rs.getString(i) to retrieve a column value of a field, and you only want the first 5 characters in the column (instead of 10 or whatever the column size is), you would do something similar to the following:
String column_value = rs.getString(1).subtstring(0,5);The above expects a String that is at least 5 characters. Your problem is when your column value returned is less than the specified substring index ( in this case 5 ) it will throw an exception. If you changed your code to this, the error will not occur:
String column_value = rs.getString( 1 ).subtstring( 0, 5);
if ( column_value.length() > 5 )
column_value = column_value.substring( 0, 5 );
}Jamie