after starting tomcat, after calling the DisplayAllEmployees.jsp from webbrowser, i am getting NULL POINTER EXCEPTION in web browser and
the below error in tomcat server :--
-------------------------------------------------------

Getting Connection.............
Error : java.sql.SQLException : [Microsoft ] [ ODBC Driver Manager ] Data source name not found and no default driver specified

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i am using oracle 10 g

i am using the below MyConnection.class
---------------------------
// MyConnection.java
//
// placed as
// K:\tomcat\webapps\test\WEB-INF\classes\mycon\MyConnection.java


package mycon;

import java.sql.*;

public class MyConnection
{
Connection connection;

public MyConnection()
{
connection = null;
}

public Connection getConnection()
{
openConnection();
return connection;
}

private void openConnection()
{
try
{
boolean isReady = true;

if(connection == null)
{
isReady = false;
}
else if(connection.isClosed() == true)
{
isReady = false;
}

if(isReady == false)
{
// Connection not in open mode, open the connection now

System.out.print("Getting Connection ... ");
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");

connection = DriverManager.getConnection(
"jdbcdbc:javaoracle","system","bhaskar");

System.out.println(" OK");
}

}
catch(Exception ex)
{
System.out.println();
System.out.println("Error: "+ex);
}
} // end of openConnection()
} // end of class

Is the DSN set up correctly and working for the ODBC connection?

I believe it is saying that it can't find the data source name that the connection is referring to.