Dear all,

I was running a Hibernate Example App in Eclipse. At run time, it immediately crashed on the first line of code:

SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();

The exception stack is below:

Looking forward to your help.
Many Thanks
------------------------------------exception stack
FirstExample (1) [Java Application]
roseindia.tutorial.hibernate.FirstExample at localhost:64348
Thread [main] (Suspended)
ClassNotFoundException(Throwable).<init>(String, Throwable) line: 217
ClassNotFoundException(Exception).<init>(String, Throwable) line: not available
ClassNotFoundException.<init>(String) line: not available
URLClassLoader$1.run() line: not available
AccessController.doPrivileged(PrivilegedExceptionAction<T>, AccessControlContext) line: not available [native method]
Launcher$ExtClassLoader(URLClassLoader).findClass(String) line: not available
Launcher$ExtClassLoader.findClass(String) line: not available
Launcher$ExtClassLoader(ClassLoader).loadClass(String, boolean) line: not available
Launcher$AppClassLoader(ClassLoader).loadClass(String, boolean) line: not available
Launcher$AppClassLoader.loadClass(String, boolean) line: not available
Launcher$AppClassLoader(ClassLoader).loadClass(String) line: not available
FirstExample.main(String[]) line: 21
C:\Program Files\Java\jre6\bin\javaw.exe (Feb 17, 2010 1:24:07 PM)

Usually a ClassNotFoundException has also a message telling which is the class that the classloader cannot find.
You must then adjust you java classpath in order that the missing class get included.

Yes, thank you.

That was the 1st thing I checked to make sure that my build path has all the jar files needed, using the FindJar utility.

I have org.hibernate.Session, org.hibernate.SessionFactory, org.hibernate.cfg.Configuration, hibernate3.jar and other common jars, their orders seem to be in place as well.

I don't know what class its complaining about and at a loss of what else to added.

Can you see from the exception stack which class is missing? I debugged it and drilled into several layers down but to no avail.

Any other ideas would be greatly appreciated.

Many Thanks...Mimi
SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();

Please take a look at the message of your ClassNotFoundException.
Is it empty?

There is no useful message except "not available". I rechecked my build path and there are many more jar files than necessary due to my attempt of guessing which might be the class in question.

Perhaps I should bring in all source necessary to debug this but I already had dug down several layers and not sure if I am barking up the wrong tree.

Here is the exception stack again:

------------------------------------exception stack
FirstExample (1) [Java Application]
[size=85]roseindia.tutorial.hibernate.FirstExample at localhost:64348
Thread [main] (Suspended)
ClassNotFoundException(Throwable).<init>(String, Throwable) line: 217
ClassNotFoundException(Exception).<init>(String, Throwable) line: not available
ClassNotFoundException.<init>(String) line: not available
URLClassLoader$1.run() line: not available
AccessController.doPrivileged(PrivilegedExceptionAction<T>, AccessControlContext) line: not available [native method]
Launcher$ExtClassLoader(URLClassLoader).findClass(String) line: not available
Launcher$ExtClassLoader.findClass(String) line: not available
Launcher$ExtClassLoader(ClassLoader).loadClass(String, boolean) line: not available
Launcher$AppClassLoader(ClassLoader).loadClass(String, boolean) line: not available
Launcher$AppClassLoader.loadClass(String, boolean) line: not available
Launcher$AppClassLoader(ClassLoader).loadClass(String) line: not available
FirstExample.main(String[]) line: 21[/size]
C:\Program Files\Java\jre6\bin\javaw.exe (Feb 17, 2010 1:24:07 PM)

Thanks.

Thats very strange.
Which version of Eclipse are you using?
And how do you start your Hibernate Example App ? From Eclipse?
Can you please give more detail about your launch-configuration.