" want to learn JDBC,ODBC,etc .."

Hi All,
This forum has been much help to me till now..
Now that i am little confident with basic java, i want to learn accessing a database(oracle) using java for which i need some good tutorials which teach me JDBC,ODBC and stuff req for that..
Can u suggest me some good sites/tutorials(free) which provides me with the above??
And also what all is necessary/required for the developing environment?.
(i have already searched google..but very confused as to which is really suitable for a beginner like me)
Any help is appreciated
Thanks and Regards,

go to this site http://www.javaworld.com
type in the search textbox tutorial jdbc
You should find explanation enough to understand jdbc etc...

Similar Messages

JDBC-ODBC Bridge, Swing Components

This program displays information from the Access database Autos.mdb.
Uses the JDBC-ODBC Bridge.
Requires a DSN called Autos pointing to Auto.mdb
I am using the swing components and can't seem to set up my combobox to pull the right data which doesn't display any of the data from the database. I am able to do it using AWT but would like a sleeker look so I am trying to convert. I have made the text bold where I am having the problem. Any insight would be greatful! I am very new to JDBC-ODBC so please go easy on me...
import java.sql.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class JDBCApp extends Frame implements ItemListener
     //Declare database variables
     Connection conVehicle;
     Statement cmdVehicle;
     ResultSet rsVehicle;
     boolean blnSuccessfulOpen = false;
     //Declare components
     JComboBox lstManuf   = new JComboBox();
     JLabel lblModel = new JLabel("                          ");
     JLabel lblYear        = new JLabel("                          ");
     JLabel lblCost      = new JLabel("                          ");
     JLabel lblID      = new JLabel("                              ");
     JLabel lblInstructions = new JLabel("Select Manufacturer to Display Record");
     public static void main(String args[])
          //Declare an instance of this application
          JDBCApp thisApp = new JDBCApp();
          thisApp.createInterface();
     public void createInterface()
          //Load the database and set up the frame
          loadDatabase();
          if (blnSuccessfulOpen)
               setTitle("Display Auto's Database");
               addWindowListener(new WindowAdapter()
                         public void windowClosing(WindowEvent event)
                              stop();
                              System.exit(0);
               setLayout(new FlowLayout());
               add(new JLabel("Manufacturer"));
               add(lstManuf);
               lstManuf.addItemListener(this);
               add(lblInstructions);
               add(new JLabel("Model"));
               add(lblModel);
               add(new JLabel("Year"));
               add(lblYear);
               add(new JLabel("Cost"));
               add(lblCost);
               add(new JLabel("Vehicle Identification"));
               add(lblID);
               setSize(300,300);
               setVisible(true);
          else
               stop();             //Close any open connection
               System.exit(-1);    //Exit with error status
          public void loadDatabase()
               try
                    //Load the MicroSoft drivers
                    Class.forName ("sun.jdbc.odbc.JdbcOdbcDriver");
               catch (ClassNotFoundException err)
                         //No drivers found
                         System.err.println("Driver did not load properly");
               try
                    //Connect to the database
                    conVehicle = DriverManager.getConnection("jdbc:odbc:Auto");
                    //Create a ResultSet
                    cmdVehicle = conVehicle.createStatement();
                    rsVehicle = cmdVehicle.executeQuery(
                                        "Select * from Vehicle;");
                    loadNames(rsVehicle);
                    blnSuccessfulOpen = true;
               catch(SQLException error)
                    System.err.println("Error: " + error.toString());
     public void loadNames(ResultSet rsVehicle)
          try
               //Fill last name list box
               while(rsVehicle.next())
               lstManuf.addItem(rsVehicle.getString("Manufacturer"));
          catch (SQLException error)
               System.err.println("Error in display record");
     public void itemStateChanged(ItemEvent event)
          //Display the selected record
          lblInstructions.setText("");          String strManufName = lstManuf.getText();
          try
               Statement cmdVehicle = conVehicle.createStatement();
               ResultSet rsVehicle = cmdVehicle.executeQuery(
                    "Select * from Vehicle where [Manufacturer] = '" + strManufName + "';");
               DisplayRecord(rsVehicle);
          catch(SQLException error)
               System.err.println("Error in recordset");
      public void DisplayRecord(ResultSet rsVehicle)
           try
               //Display information
               if(rsVehicle.next()) //If more records remain
                    lblModel.setText(rsVehicle.getString("ModelName"));
                    lblYear.setText(rsVehicle.getString("Year"));
                    lblCost.setText(rsVehicle.getString("CostValue"));
                    lblID.setText(rsVehicle.getString("VehicleID"));
               else
                    System.err.println("No more records");
          catch (SQLException error)
               System.err.println("Error in display record");
     public void stop()
          try
               //Terminate the connection
               if (conVehicle != null)
                    conVehicle.close();
          catch(SQLException error)
               System.err.println("Unable to disconnect");
}

I am going to help you out but first I would like to advise you not to do this.
Mixing JDBC and Swing (or any GUI for that matter) like this is not the preferred way to proceed. If you want to learn JDBC then command line/shell is fine. If you want to learn Swing learn Swing. When you want to use the two together learn about MVC first.
I am advising you to do this because nobody writes code like this (mixing GUI and database and business logic all in one class). So if you want real world training MVC should be what you look at next.
See http://en.wikipedia.org/wiki/Model-view-controller for more
As near as I can tell your problem is mostly just because you aren't using the combo box correctly. Try
String strManufName = lstManuf.getSelectedItem().toString();it's a bit of a hack but will work for your purposes. What you need in the eend is to use the methods JComboxBox has like getSelectedItem() or getSelectedIndex().
See http://java.sun.com/docs/books/tutorial/uiswing/components/combobox.html for more.
Some other comments.
1) It's nice to see you aren't just swallowing exceptions but some of them are kind of pointless if you just continue on. Like here
try
//Load the MicroSoft drivers
Class.forName ("sun.jdbc.odbc.JdbcOdbcDriver");
catch (ClassNotFoundException err)
//No drivers found
System.err.println("Driver did not load properly");
}And then you continue on with the method. What for? There's no point since the driver didn't load.
2) Please look into the use of PreparedStatements. Very good things those. You can use them in place of your Statements. They are safer but for your purposes help you by you not having to worry about the formatting of data you bind to queries. For example what happens if a manufacturer name contains a ' (single quote) ? Trouble that's what. PreparedStatements make that problem go away.
3) Don't use SELECT *. It is always good practice to put the names of the columns you are selecting. This prevents your code from breaking if the order of the columns should change in any way.

How can i put a file into blob(using sun.jdbc.odbc.JdbcOdbcDriver)

Hi
i tried to put a file into blob , but got a problem.....
My environment:windows 2000pro,JBuilder 5.0 enterprise,oracle 8.1.6,(not install oracle jdbc driver )
a part of program(my program is very uglily,if anyone want,later i paste it ba....~_~)
//Statement stmt2=null;
//Resultset rs2;
//opa1 is the blob data
void saveBlobTableToDisk(Connection con) {
try {
stmt2=con.createStatement();
sqlStr2="SELECT * FROM emp3 where id=1004";
rs2=stmt2.executeQuery(sqlStr2);
while (rs2.next()) {
Blob aBlob=rs2.getBlob("opa1");
i got the exception :
" null
java.lang.UnsupportedOperationException
     at sun.jdbc.odbc.JdbcOdbcResultSet.getBlob(JdbcOdbcResultSet.java:4174)
     at test3.Frame1.saveBlobTableToDisk(Frame1.java:48)
     at test3.Frame1.<init>(Frame1.java:26)
     at test3.Application1.<init>(Application1.java:5)
     at test3.Application1.main(Application1.java:8) "
and the windows pop up a messagebox said that(about) my memory "0x09af007f" could not read, error in javaw.exe .
Later i used (ResultSet)getBinaryStream() to solve it. but getBinaryStream() only return a InputStream,so that i can make blob to a file,but i can't make a file to blob using jdbc.....
I am very stupid that installing sun java, oracle jdbc driver etc....(because i must set a lot of thing such as classpath,java_home etc), Can i only use JBuilder to do that ?
Or i must install oracle jdbc driver ?
Thanks.

My guess here is that Sun's JDBC-ODBC bridge doesn't handle the BLOB datatype. Most ODBC drivers don't support that datatype, so I wouldn't expect the bridge to.
Is there a reason that you can't use the Oracle driver?
Justin

How to append records in MSAccess through Java using JDBC:ODBC

Hello,
I was able to retrieve records from MSAccess database through JAVA over the JDBC-ODBC bridge.
If I want to append records to a table (for eg. photo1 table containing photono., length, breadth, area as
columns) I could not able to do so through JAVA.
I am using JTable with the above fields. The user is displayed with the JTable and he has to enter
data inside the JTable and press a button titled "Append". Then the JAVA program should append
whatever the user has entered in the JTable as a single record inside the MSAccess database.
Can anyone help me please?

hi i too am having similar problem. i am able to create a table in ms access through java but when i insert values i get a msg that it has inserted the values but when i check the table by opening ms-access there are no values in the table.
the insert statement i am using is
" insert into tk1 values(3,'tarun')"
further i tried using the methods commit, setAutoCommit etc with the connection object. -NO GO.
can you help me ?

How to run Excel Macros using JDBC-ODBC

Hi,
I want to run the excel macros in the excel file, after I connected to excel file, using JDBC-ODBC bridge.
How macros treated here?
Help needed please..........
- Ramesh

How to run Excel Macros using JDBC-ODBCYou don't.
As my fuzzy understanding goes.....
Macros (excel, word, etc) run via a "OLE" extension of the script host system.
So the only way to run them is via the OLE interface. That has nothing to do with ODBC. You can write your own JNI to do that, or you might get lucky and find that someone else has written a java library to do it for you.

Oracle RDB Driver fails with JDBC/ODBC Bridge

Has anyone experienced problems using the latest Oracle RDB
Driver (3.0.2.0) with the JDBC/ODBC Bridge.
We have been using the Oracle ODBC Driver for RDB (2.10.17)
successfully on NT, but it is not supported on W2K. The new
drivers work fine for Access etc., but fail with the bridge.
Specifically, you can step thru a result set, but getObject()
returns null for all fields.
Any suggestions?
Joe

This forum is for general suggestions and feedback about the OTN
site. For technical question about an Oracle product, you can
select the appropriate discussion forum in our 'Discussions'
section at: http://forums.oracle.com/forums/homepage.jsp
Best regards, OTN Team

JDBC-ODBC bridge

Hello,
I'm using JDK1.5 and have a working connection to MySQL using JDBC. I now need to connect to Interbase database using ODBC and that's where I'm completely lost.
Could somebody please tell me if I have to download a JDBC-ODBC bridge or if it's already in the package? Can JDBC-ODBC communicate with InterBase?
Please help.
Thank you,
Victor.

Uf you want the password stored in the ODBC DSN, you'll need to go through the back door. This isn't something Oracle makes easy because it has horrible security implications-- the password will be stroed in the registry in plain text.
If you add a key "Password" with the value of your password to the registry where your DSN is, the ODBC driver will use that value to connect to the database. I don't recall the exact heirarchchy riht now, but a registry search for the name of your DSN ought to find it pretty quickly. As always, playing with your registry isn't recommended and may cause problems if you don't do it correctly.
Justin

JDBC-ODBC Bridge to SPSS data files - Result Set Type is not supported

Hello,
As mentioned in the subject I am trying to read SPSS data files using the SPSS 32-Bit data driver, ODBC and the JDBC-ODBC Bridge.
Using this SPSS Driver I manged to read the data directly into an MS-SQL Server using:
SELECT [...] FROM
OPENROWSET(''MSDASQL.1'',''DRIVER={SPSS 32-BIT Data Driver (*.sav)};DBQ=' SomePathWhereTheFilesAre';SERVER=NotTheServer'', ''SELECT 'SomeSPSSColumn' FROM "'SomeSPSSFileNameWithoutExt'"'') AS a
This works fine!
Using Access and an ODBC System DNS works for IMPORTING but NOT for LINKING.
It is even possible to read the data using the very slow SPSS API.
However, when it comes to JDBC-ODBC the below code does only work in part. The driver is loaded successfully, but when it comes to transferring data into the resultset object the error
SQLState: null
Result Set Type is not supported
Vendor: 0
occurs.
The official answer from SPSS is to use .Net or to use their implementation with Python in their new version 14.0. But this is obviously not an option when you want to use only Java.
Does anybody have experience with SPSS and JDBC-ODBC??? I have tried the possible ResultSet Types, which I took from:
http://publib.boulder.ibm.com/infocenter/db2luw/v8/index.jsp?topic=/com.ibm.db2.udb.doc/ad/rjvdsprp.htm
and none of them worked.
Thank you in advance for your ideas and input & stay happy!
Here the code without all the rest of the class arround it:
// Module: SimpleSelect.java
// Description: Test program for ODBC API interface. This java application
// will connect to a JDBC driver, issue a select statement
// and display all result columns and rows
// Product: JDBC to ODBC Bridge
// Author: Karl Moss
// Date: February, 1996
// Copyright: 1990-1996 INTERSOLV, Inc.
// This software contains confidential and proprietary
// information of INTERSOLV, Inc.
public static void main1() {
String url   = "jdbc:odbc:SomeSystemDNS";
String query = "SELECT SomeSPSSColumn FROM 'SomeSPSSFileName'";
try {
    // Load the jdbc-odbc bridge driver
    Class.forName ("sun.jdbc.odbc.JdbcOdbcDriver");
    DriverManager.setLogStream(System.out);
    // Attempt to connect to a driver. Each one
    // of the registered drivers will be loaded until
    // one is found that can process this URL
    Connection con = DriverManager.getConnection (url);
    // If we were unable to connect, an exception
    // would have been thrown. So, if we get here,
    // we are successfully connected to the URL
    // Check for, and display and warnings generated
    // by the connect.
    checkForWarning (con.getWarnings ());
    // Get the DatabaseMetaData object and display
    // some information about the connection
    DatabaseMetaData dma = con.getMetaData ();
    System.out.println("\nConnected to " + dma.getURL());
    System.out.println("Driver       " +
      dma.getDriverName());
    System.out.println("Version      " +
      dma.getDriverVersion());
    System.out.println("");
    // Create a Statement object so we can submit
    // SQL statements to the driver
    Statement stmt = con.createStatement(ResultSet.TYPE_FORWARD_ONLY ,ResultSet.CONCUR_READ_ONLY);
    // Submit a query, creating a ResultSet object
    ResultSet rs = stmt.executeQuery (query);
    // Display all columns and rows from the result set
    dispResultSet (rs);
    // Close the result set
    rs.close();
    // Close the statement
    stmt.close();
    // Close the connection
    con.close();
}

Thank you for your reply StuDerby!
Actually the above script was before, as you suggested, leaving the ResultSetTeype default. This did not work...
I am getting gray hair with SPSS - in terms of connectivity and "integratebility" none of their solutions offered is sufficient from my point of view.
Variable definitions can only be read by the slow API, data can only be read by Python or Microsoft Products... and if you want to combine both you are in big trouble. I can only assume that this is a company strategy to sell their Dimensions Platform to companies versus having companies developping their applications according to business needs.
Thanks again for any furthur suggestions and I hope, that some SPSS Developper will see this post!
Cheers!!

Ms Access problems with Jdbc Odbc!!!

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

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

Problem using Jdbc-Odbc Bridge

Hi,
I am using Java 2 SDK and I am trying to access MS Access database on my machine using Jdbc-Odbc bridge. I have set up the DSN in ODBC. But I get the following error when I run my program -
'No Suitable Driver'
Here's my code snippet-
Class.forName ("sun.jdbc.odbc.JdbcOdbcDriver");
String dsn = "jdbc:odbc:DriverInfoDB";
Connection con = DriverManager.getConnection(dsn,"","");
con.setAutoCommit(false);
Statement stmt;
String query = null; // SQL select string
ResultSet rs; // SQL query results
stmt = con.createStatement();
.....etc etc...
Where is the error in this code??
Help Needed!!
Thanks
Vivek.

try
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con = DriverManager.getConnection(dsn,"guest","guest");
OR DriverManager.getConnection(dsn);
System.out.println("Conection's opened");
catch(ClassNotFoundException cnfe)
System.err.println(cnfe);
catch(SQLException sqle)
System.err.println(sqle);
try that code and double check you DSN Name . it's a good practice to greate a system DSN.
i hope that helps.
FEEL FREE TO ASK. WON'T BITE U
ABDUL

J2EE and JDBC-ODBC bridge driver

Hi all,
in my application I want to access an ODBC database to get the data and put it into cloudscape. In my resources.properties I added the jdbc driver
jdbcDriver.1.name=sun.jdbc.odbc.JdbcOdbcDriverand also added a datasource
jdbcDataSource.5.name=jdbc/MyOdbc
jdbcDataSource.5.url=jdbc\:odbc\:odbc-nameAfter starting j2ee 1.3.1 the server reports following error:
Error in creating data source object: jdbc/MyOdbcWhat's going wrong? Thanks for your help.
-chris

additional information:
The phenomenon happens only if I use J2SDK 1.4.0. Running the 1.3.1 the driver is loaded without any problems.
Is it a security issue or am I not allowed to use 1.4 because it's too new?
-chris

Problem with jdbc:odbc returning incorrect number of rows.

Hello,
Am sure i have done something stupid, but i have an issue with jdbc:odbc ....
It is a simple sceanrio that i have coded umpteen times before ...
I have the following ....
1. Connection to DB2 on an IBM i5 (I apologise for not using native drivers from jt400.jar, but i had an ODBC code example and was in a rush - no excuse i know)
2. Statement object created from connection above
3. A string with my SQL in it
4. A result set for the results.
These are created as follows:
Class.forName( "sun.jdbc.odbc.JdbcOdbcDriver");
con = DriverManager.getConnection(ODBCSource, userID, password);
if (con == null) {
// error handling not relevant here
} else {
Statement s = con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE);
String SQL = "select * from table";
ResultSet rs = s.executeQuery(SQL);
i then try to loop ....
while (rs.next() )
// stuff
however, i only ever get one result .... if i stick in the check for isLast, the first loop hits this check, i get my little status message, and the loop ends.
while (rs.next() )
if (rs.isLast() )
System.out.println("I am on last record");
BUT if i run the SQL
"select count(*) from table" ... i get a count of 148 !!
I tried setting the FetchSize through setFetchSize(), but made no difference.
This is running on a JBoss server 4.2.1GA, JDK is "jdk1.6.0_02" .... i have a suspicion that this may be a JBoss specfic issue, as this exact code runs just fine on the Domino platform that it was originally on, if this is the case, i apologise for wasting everyones time .... but would still appreciate any pointers you can give me.
Cheers

Hello,
Thanks for the reply, I am not sure i follow what you are saying.
I only mentioned JBoss as it is the application server that we have deployed to and because the orignal code ran fine on a Domino server, I will take your advice and try to run it through in debug rather than running actually on the application server.
Am i incorrect in my assumption that if "select count(*) from table" gives a count of 148, i should expect 148 records in a result set created from "select * from table" ? This is all rather new to me so i apologise if this is incorrect, I'd love to know why this is incorrect so i dont make similar mistakes in future.
Also, If i run this same code on the previous platform, i get 148 iterations of the code contained within
while (rs.next() ) { ... }
When the war file is deployed to JBoss, the same SQL statement gives a result set that only iterates once for
while (rs.next() ) { ... }
The previous platform as I say was domino, but it was running as a lotus notes java agent (despite not using any notes documents etc) as it happened to be where the web pages that call this process were located. It is possible that some of the main code has changed as I had cut and paste the code into a servlet using MyEclipse, but i have double checked the bit that does this SQL request and it is identical
To complete the picture, the new servelt is then called from the action tag on the submit form on a JSP, when it ends the servlet redirects via the requestdispacher to success or failure jsp pages depending on the outcome of the processing.
Thank you again for your help.

Problem in building JDBC ODBC connection with my stand alone Project.

Hello Everyone!
I gave the following command in order to create JAR file:
C:\app>jar cvfm MyJar.jar Manifest.txt .
and the Manifest file contains the code: Main - Class: Login
My Manifest File and the .class codes and the JAR file which is created successfully by the above command are in the same folder "app" and then I run the project both at command prompt by the command : C:\app>java -jar MyJar.jar
and by double clicking the JAR file. My project is running successfully but, I am using JDBC - ODBC Driver in my project and I want to let this project run in any other computer system. So, any other user who is unknown to the Driver used and Database used in my project can't be able to run my project if the specified driver is not installed in his machine and also there is a bridge of ODBC Data Source (from control panel-- Administrative Tools-- Data Sources(ODBC) )from which Driver is selected and the Database is specified.
In order to test my application, I had removed the data source name from the Control Panel's Data Sources (ODBC) properties' window. Then I run my project then the following error msg is shown in command prompt:
C:\app>java -jar MyJar.jar
java.sql.SQLException: [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified
at sun.jdbc.odbc.JdbcOdbc.createSQLException(JdbcOdbc.java:6879)
at sun.jdbc.odbc.JdbcOdbc.standardError(JdbcOdbc.java:7036)
at sun.jdbc.odbc.JdbcOdbc.SQLDriverConnect(JdbcOdbc.java:3028)
at sun.jdbc.odbc.JdbcOdbcConnection.initialize(JdbcOdbcConnection.java:3
23)
at sun.jdbc.odbc.JdbcOdbcDriver.connect(JdbcOdbcDriver.java:174)
at java.sql.DriverManager.getConnection(DriverManager.java:512)
at java.sql.DriverManager.getConnection(DriverManager.java:193)
at Login.<init>(Login.java:37)
at Login.main(Login.java:364)
Error Trace in getConnection() : [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified
So, I have a doubt at this point that how a user is able to configure this bridge in order to run my application who is unknown to my project's back-hand? As JRE is essential to run my project so, I have decided to give setup of JRE with my project's CD, may the JDBC - ODBC Driver providing to the user with my application setup solve this problem ?
Please help me to solve my problem.

M.V.Asolkar wrote:
Please please help me.Lets presume hypothetically that the jTDS driver won't work with 2000. It might or might not.
However the fact remains that your ODBC driver is not working.
So the first step is to stop trying to run your full application. Instead you create a very simple console application that does nothing but connect to the database.
Problems that usually occur from that would be.
1. The connection string is not correct for MS SQL Server.
2. The connection information for the database is not correct
3. The database (nothing to do with java) is not configured to accept connections.

JDBC-ODBC Bridge Performance To MS Access

Hey all, I'm running a Java app that extracts an entire table (set of tables) from Oracle and copies them into Access. The easiest implementation has been to use a DSN-less Type 1 JDBC-ODBC bridge connection to Access, but unfortunately the inserts are taking too long.
I have tried both Statement and PreparedStatement approaches, with both single row and batch updates. Some of the performance times, relative to the computer I am on (PIII 1 gHz with 256 RAM), are as follows:
Via Batch, about 8min, 15 seconds per 10,000 rows.
Via Single Row updates/inserts, about 52 minutes for 45,000 rows.
I've tried alot of varieties with batch, but 10,000 seemed to be the best. The largest table is only 45,000 rows (right now), but has the potential to grow much larger (obviously). This application needs to backup 4 databases, each with N tables (current N=7, but will expand). I'm trying to knock down the times and increase performance, but am not sure what is "reasonable" for Type 1 connections with JDBC. I've seen third party drivers, Type 3, for Access...but don't want to run the middle tier server for filtering request through. I'd rather use Type 4, but can't seem to find any for Access.
Any suggestions? Recommendations? Let me know! Thanks all! :)

Hi,
If its a backup/batch process why are you worrying about performance, its only an offline process :) even if has to be triggered during an OLTP run this task asynchronously.
I dont know why you have chosen java to do this ??? any way prepared statements with non scrollable resultsets will increase you performance better tha scrollable normal statements.
Rajesh

JDBC : ODBC Datasource

Currently we are using the jdbc:odbc to connect to a database.
basically -
forName("sun.jdbc.odbc.JdbcOdbcDriver").newInstance();
props.setProperty("user", "xxx");
props.setProperty("password", "xxx");
return DriverManager.getConnection(URL, props);
I want to put a datasource into JNDI and use the datasource.getConnection method to connect to our db what do i need - specificly - can i get a DataSource object for the jdbc:odbc bridge?

Hi,
I have printed out the J2EE tutorial for j2sdkee1.3 today, and this answers all the quesions you are asking. It is obviously available under downloads (search j2ee). It is well worth reading.And lots more info too.
best kev

" want to learn JDBC,ODBC,etc .."

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