class not found exception error occur while running code in java

Question

i tried this code. after fill this as I shown in picture click transfer button the exception will be throw java.lang.ClassNotFoundException: sun.jdbc.odbc.JdbcOdbcDriver this my database tables

accountholder

acno | balance

TransferDetails acno1 | acno2 | amount

please fix this error

import java.awt.*;
    import java.awt.event.*;
    import java.sql.*;
    import javax.swing.*;

    class DatabaseBean
    {
    Connection con1=null;

        public DatabaseBean( ) throws Exception
        {
             Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
             con1=DriverManager.getConnection("jdbc:odbc:dsnjsp","sa","");
           }

         public Connection getConnection( )
        {
            return con1;
            }
       }

    public class MoneyTransfer extends JFrame
    {
        JLabel label1,label2, label3;
        JLabel heading;

        JTextField text1,text2,text3;
        JButton but1;

        public MoneyTransfer( ){

            label1=new JLabel("From A/c Number");
            label2=new JLabel("To A/c Number");
            label3=new JLabel("Amount ");
            text1=new JTextField(5);
            text2=new JTextField(5);
            text3=new JTextField(5);

            heading=new JLabel("Money Transfer - using transaction ");
            heading.setFont(new Font("Curlz MT",Font.BOLD,12));
            but1=new JButton("Transfer");
            ButtonHandler handler1=new ButtonHandler( );
            but1.addActionListener(handler1);

            JPanel panel1=(JPanel)getContentPane( );
            panel1.setLayout(new FlowLayout( ) );
            panel1.add(heading);
            panel1.add(label1);
            panel1.add(text1);
            panel1.add(label2);
            panel1.add(text2);
            panel1.add(label3);
            panel1.add(text3);
            panel1.add(but1);
            setSize(420,120);
            setVisible(true);
            setLocation(200,200);

        }


    class ButtonHandler implements ActionListener
    {
        public void actionPerformed(ActionEvent ae)
        {
            int _acno1= Integer.parseInt( text1.getText( ));
            int _acno2= Integer.parseInt( text2.getText( ));
            float _amount= Float.parseFloat( text3.getText( ));

            DatabaseBean db1=null;

            try{
            db1 = new DatabaseBean( );
            java.sql.Connection con1=db1.getConnection( );

            con1.setAutoCommit(false);

            PreparedStatement st1=con1.prepareStatement("update accountholder set balance=balance-? where acno=?");
            st1.setFloat(1,_amount);
            st1.setInt(2,_acno1);
            st1.executeUpdate( );

            PreparedStatement st2=con1.prepareStatement("update accountholder set balance=balance+? where acno=?");
            st2.setFloat(1,_amount);
            st2.setInt(2,_acno2);
            st2.executeUpdate( );

            PreparedStatement st3=con1.prepareStatement("insert into TransferDetails(acno1,acno2,amount) values(?,?,?)");
            st3.setInt(1,_acno1);
            st3.setInt(2,_acno2);
            st3.setFloat(3,_amount);
            st3.executeUpdate( );

            PreparedStatement st4=con1.prepareStatement("select balance from accountholder where acno=?");
            st4.setInt(1,_acno1);
            ResultSet rs1=st4.executeQuery( );
            rs1.next( );

            if(rs1.getFloat(1)< 0)
            {
                con1.rollback();
                JOptionPane.showMessageDialog(null,"transaction failed");
                }
            else
             {
                con1.commit( );
                JOptionPane.showMessageDialog(null,"transaction executed successfully");
                }

           clearscreen( );
           }catch(Exception ee)
            {
                System.out.println( ee.toString());
                JOptionPane.showMessageDialog(null,"excception caught");

                }

        }

    void clearscreen( )
    {
        text1.setText("");
        text2.setText("");
        text3.setText("");
        text1.requestFocus( );
        }
    }
        public static void main(String[ ] args)
        {
            MoneyTransfer instance1= new MoneyTransfer ( );
            }
    }

Did you installed the driver ? – John Joe May 24 '17 at 07:19 — John Joe, May 24 '17 at 07:19
ya. I have install the required drivers – Loshini Loganathan May 24 '17 at 07:23 — Loshini Loganathan, May 24 '17 at 07:23

Cap · Answer 1 · 2017-05-24T07:37:43.317

0

If you are using Java 8, which is most probably the case, the JDBC-ODBC bridge has been removed. Refer to this thread in order to change connection properties Access Database from Java without ODBC

MsSQL In order to connect to mssql simply use sqlserverdriver

String url = "jdbc:sqlserver://localhost\\SQLEXPRESS;databaseName=MYDB;integratedSecurity=true";
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
Connection conn = DriverManager.getConnection(url);

edited May 24 '17 at 07:37

answered May 24 '17 at 07:26

Cap

353
2
16

i have connected sql server 2000 database not access – Loshini Loganathan May 24 '17 at 07:30
@LoshiniLoganathan updated answer. Please, include in your question these small details, like which database are you using, so that everyone understands what you need. Since ODBC is used to connect mainly to MS Access – Cap May 24 '17 at 07:37
java.lang.ClassNotFoundException: com.microsoft.sqlserver.jdbc.SQLServerDriver this exception was thrown – Loshini Loganathan May 24 '17 at 07:56
@LoshiniLoganathan, of course. You have to include sqljdbc4.jar into your lib and specify paths. – Cap May 24 '17 at 08:10
You can try to research a bit. It's simple if you put some efforts towards it. – Cap May 24 '17 at 08:18

class not found exception error occur while running code in java

1 Answers1