problems with java class SomeBol.java in sample

hi all,

I try to create a webdynpro with a table by using a sample of the tutorials. I have a problem to create the java class SomeBOL.java. Even when I copy the sample class it does not work.

What is my problem and how do I solve it.

My sample is:

https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/webas/webdynpro/application of context programming and data binding.pdf

Kind Regards,

Richard Middelburg