java.lang.NoClassDefFoundError

[Becerra Lagos Ana Lilian]

Hi,

 

Could you help me in my program JAVA with jdbc Postgre

I have my simple code

 

import java.sql.DriverManager;

import java.sql.Connection;

import java.sql.SQLException;

 

public class Example2 {

  public static void main(String[] argv) {

  System.out.println("Checking if Driver is registered with DriverManager.");

 

  try {

    Class.forName("org.postgresql.Driver");

  } catch (ClassNotFoundException cnfe) {

    System.out.println("Couldn't find the driver!");

    System.out.println("Let's print a stack trace, and exit.");

    cnfe.printStackTrace();

    System.exit(1);

  }

  }

 }

 

Then I execute :

javac Example2.java

 

Then I execute

            java Example2

 

but I get

Exception in thread "main" java.lang.NoClassDefFoundError: Example

 

Wich is my error ?

I copied pg73jdbc3.jar  in my path

C:\j2sdk1.4.1_07\lib\

Its have org.postgresql.Driver

 

Thanks advanted

ana

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[Nico]

It didn't work for me either. When I put the jar file in my classes directory, it did work.

""Becerra Lagos Ana Lilian"" <exabe...@nt.entel.cl> schreef in bericht news:3A568BC085A5794983C...@epmarexc03.Entelpcs.Entelcorp.com...

[Becerra Lagos Ana Lilian]

But now
I get

C:\j2sdk1.4.1_07\bin>java -classpath c:\j2sdk1.4.1_07\lib\pg73jdbc.jar;. Example
2

Checking if Driver is registered with DriverManager.

Couldn't find the driver!

Let's print a stack trace, and exit.

java.lang.ClassNotFoundException: org.postgresql.Driver
at java.net.URLClassLoader$1.run(URLClassLoader.java:198)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:186)
at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:272)
at java.lang.ClassLoader.loadClass(ClassLoader.java:255)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:315)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:140)
at Example2.main(Example2.java:10)

:(

-----Mensaje original-----
De: William Lai [mailto:wlai...@gmail.com]
Enviado el: Martes, 18 de Enero de 2005 12:25
Para: Becerra Lagos Ana Lilian
CC: pgsql...@postgresql.org
Asunto: Re: [JDBC] java.lang.NoClassDefFoundError

Hi,

Did you try,

java -classpath c:\path\to\pg73jdbc3.jar;. Example2

Have a nice day,
William

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[William Lai]

Hi,

Did you try,

java -classpath c:\path\to\pg73jdbc3.jar;. Example2

Have a nice day,
William

Becerra Lagos Ana Lilian wrote:

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[William Lai]

Please double-check the your jar filename, is pg73jdbc.jar or pg73jdbc3.jar?

>>y puede contener informaci�n confidencial o privilegiada.
>>Si usted recibi� este correo por error, por favor notificar

>>inmediatamente
>>al emisor y elimine el correo original. Cualquier otro uso de este correo
>>esta prohibido.
>>
>>******************************************************************************************************
>>
>>
>>This message is for the designated recipient only and may contain
>>privileged or
>>confidential information. If you have received it in error, please
>>notify the sender
>>immediately and delete the original. Any other use of the email is
>>prohibited.
>>
>>
>Este correo es dirigido solo a las personas que aparecen como destinatarios

>y puede contener informaci�n confidencial o privilegiada.
>Si usted recibi� este correo por error, por favor notificar inmediatamente