Caused by: java.lang.NoClassDefFoundError: com/google/zxing/NotFoundException

[Dominik]

Hi all!

I am using Zxing to scan QR-Codes which I capture via a webcam and the "webcam-capture" library.

Everything works fine if I run my project (it is a JavaFX project) in Eclipse. But if I build my project and try to run the .jar or the .jnlp or the applet, I get the following error:

Caused by: java.lang.NoClassDefFoundError: com/google/zxing/NotFoundException

        at de.paan.client.webcam.ScanBarcodeService.createTask(Unknown Source)

        at javafx.concurrent.Service.start(Service.java:575)

        at de.paan.client.PAANTagWindowController.handleStartScanButton(Unknown Source)

Can anyone tell me, where this problem comes from?

Thanks

 Dominik

[Sean Owen]

The answer is right there -- you did not include any of the library classes in your app.

[Dominik]

Hi Sean,

I did include the library in the classpath as external library in my Eclipse project. The library appears in Eclipse under referenced libraries and in Eclipse everything works fine.

Only when I build the app and try to run it from outside Eclipse I get the error...

Bye 

 Dominik

[Sean Owen]

You're talking about compile-time inside Eclipse. Again, the problem is obviously the runtime packaging and environment. This is up to you and your project and nothing to do with the library.

[Dominik]

Hi Sean,

thank's for the tip.

The problem was that the "ZXING core.jar" had a space between ZXING and core.jar. I renamed it to "ZXING_core.jar" and it works now.

Bye

 Dominik