Runtime Error - NoClassDefFoundError: <wrong name ...>

[Benjaarm]

Hi All,

I am having trouble getting a user-defined class to work properly. The java compiles just fine but I get the following runtime error: NoClassDefFoundError: HelloWorld <wrong name...> ... etc. I'm sure this is related to the classpath setting but I can't seem to work it out.

The relevant source code in HelloWorld.java:

package examples.HelloWorld
import com.sitename.helper.Helper;

To the classpath variable I have added:

C:\Program Files\Java\sitename\classes\com\sitename\helper

HelloWorld.java and HelloWorld.class are contained in:

C:\Program Files\Java\sitename\examples\HelloWorld

The Helper.class is contained in the same directory structure as I have set in the classpath variable.

I have searched for the info on how to figure this out but I have not found anything that is helping. I have no doubt this is a fairly common newbie error and I'm somewhat annoyed that I can't figure this out with the information I have at hand.

I'd really appreciate your help.

Thanks in advance,
Ben

[JosAH]

The full name of your class is examples.HeloWorld.HelloWorld and you should run it as such (i.e. including the package name).

kind regards,

Jos

[Benjaarm]

Hi JosAH,

Thanks for your reply. Unfortunately, I am now getting "error: could not find or load main class: example.HelloWorld,HelloWorld". I get the same error no matter what variation of path or class name I use (eg example.HelloWorld).

I will stick at it.

Thanks,
Ben

[JosAH]

Thanks for your reply. Unfortunately, I am now getting "error: could not find or load main class: example.HelloWorld,HelloWorld". I get the same error no matter what variation of path or class name I use (eg example.HelloWorld).

If your class is stored in /X/examples/HeloWorld/HelloWorld.class (X is any directory path) then your classpath variable should contain /X and you should start the class by doing:

java -cp /X examples.HelloWorld.HelloWord

Of course you should add any other classpath components needed by your program.

kind regards,

Jos