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Posted to derby-dev@db.apache.org by Sean McCully <se...@yahoo.com> on 2005/11/17 21:46:58 UTC

Derby Driver

Hello I probably have a rather simple question, when I execute the following line 
   
  Class.forName("org.apache.derby.jdbc.EmbeddedDriver").newInstance(); 
   
  it throws the following exception 
   
  java.lang.ClassNotFoundException: org.apache.derby.jdbc.EmbeddedDriver
   
  derby.jar is included in my Classpath, what is the problem?
   
  Thanks!!

		
---------------------------------
 Yahoo! FareChase - Search multiple travel sites in one click.

Re: Derby Driver

Posted by Stanley Bradbury <St...@gmail.com>.

Sean McCully wrote:

> Apologies should I continue the discussion here or move it?
>  
> Yes when I execute the derby jar it works, and actually I was able to 
> get the driver to load by merely replacing the String name with a 
> String constant but on subsequents loads it failed. Also this may be 
> due to the computer I was using which experienced a crashed 
> afterwards. I will check tommorrow and move this discussion to the 
> derby-user mailing list.
>  
> Thanks!!
>
> */....  SNIP ...
> /*
>
>
>         On 11/17/05, *Sean McCully* < sean_mccully@yahoo.com
>         <ma...@yahoo.com>> wrote:
>
>             Hello I probably have a rather simple question, when I
>             execute the following line
>              
>             Class.forName("org.apache.derby.jdbc.EmbeddedDriver").newInstance();
>
>              
>             it throws the following exception
>              
>             java.lang.ClassNotFoundException :
>             org.apache.derby.jdbc.EmbeddedDriver
>              
>             derby.jar is included in my Classpath, what is the problem?
>
Hi Sean -
Are you using and IDE or executing in a server environment?  In these 
cases you need to be sure that derby.jar is in the classpath of the 
Server / IDE.  Hope it's something as easy as this.

Re: Derby Driver

Posted by Sean McCully <se...@yahoo.com>.

Apologies should I continue the discussion here or move it?

Yes when I execute the derby jar it works, and actually I was able to get the driver to load by merely replacing the String name with a String constant but on subsequents loads it failed. Also this may be due to the computer I was using which experienced a crashed afterwards. I will check tommorrow and move this discussion to the derby-user mailing list.

Thanks!!

Francois Orsini <fr...@gmail.com> wrote:
Btw, this kind of question should be posted to derby-user mailing list preferrably...

On 11/17/05, Francois Orsini < francois.orsini@gmail.com> wrote: Seems like a classpath issue...is your application using the default JVM classloader

On the command-line, can you run: (you need to have derby.jar or derbytools.jar in the classpath)

java org.apache.derby.tools.sysinfo

Do you get the same ClassNotFound exception?

On 11/17/05, Sean McCully < sean_mccully@yahoo.com> wrote: Hello I probably have a rather simple question, when I execute the following line

Class.forName("org.apache.derby.jdbc.EmbeddedDriver").newInstance();

it throws the following exception

java.lang.ClassNotFoundException : org.apache.derby.jdbc.EmbeddedDriver

derby.jar is included in my Classpath, what is the problem?

Thanks!!

---------------------------------
Yahoo! FareChase - Search multiple travel sites in one click.

Re: Derby Driver

Posted by Francois Orsini <fr...@gmail.com>.

Btw, this kind of question should be posted to derby-user mailing list
preferrably...

On 11/17/05, Francois Orsini <fr...@gmail.com> wrote:
>
> Seems like a classpath issue...is your application using the default JVM
> classloader
>
> On the command-line, can you run: (you need to have derby.jar or
> derbytools.jar in the classpath)
>
> java org.apache.derby.tools.sysinfo
>
> Do you get the same ClassNotFound exception?
>
> On 11/17/05, Sean McCully <se...@yahoo.com> wrote:
> >
> > Hello I probably have a rather simple question, when I execute the
> > following line
> >  Class.forName("org.apache.derby.jdbc.EmbeddedDriver").newInstance();
> >  it throws the following exception
> >  java.lang.ClassNotFoundException : org.apache.derby.jdbc.EmbeddedDriver
> >  derby.jar is included in my Classpath, what is the problem?
> >  Thanks!!
> >
> > ------------------------------
> >  Yahoo! FareChase - Search multiple travel sites in one click.<http://us.lrd.yahoo.com/_ylc=X3oDMTFqODRtdXQ4BF9TAzMyOTc1MDIEX3MDOTY2ODgxNjkEcG9zAzEEc2VjA21haWwtZm9vdGVyBHNsawNmYw--/SIG=110oav78o/**http%3a//farechase.yahoo.com/>
> >
> >
>

Re: Derby Driver

Posted by Francois Orsini <fr...@gmail.com>.

Seems like a classpath issue...is your application using the default JVM
classloader

On the command-line, can you run: (you need to have derby.jar or
derbytools.jar in the classpath)

java org.apache.derby.tools.sysinfo

Do you get the same ClassNotFound exception?

On 11/17/05, Sean McCully <se...@yahoo.com> wrote:
>
> Hello I probably have a rather simple question, when I execute the
> following line
>  Class.forName("org.apache.derby.jdbc.EmbeddedDriver").newInstance();
>  it throws the following exception
>  java.lang.ClassNotFoundException: org.apache.derby.jdbc.EmbeddedDriver
>  derby.jar is included in my Classpath, what is the problem?
>  Thanks!!
>
> ------------------------------
> Yahoo! FareChase - Search multiple travel sites in one click.<http://us.lrd.yahoo.com/_ylc=X3oDMTFqODRtdXQ4BF9TAzMyOTc1MDIEX3MDOTY2ODgxNjkEcG9zAzEEc2VjA21haWwtZm9vdGVyBHNsawNmYw--/SIG=110oav78o/**http%3a//farechase.yahoo.com/>
>
>