Java Pilot-DB

I cannot use this program.
this is the error:

$ java -jar jpilot-db-1.3.20-ej.jar
Exception in thread "main" java.lang.NoClassDefFoundError: pilotdb.ui.Application
at java.lang.Class.initializeClass(libgcj.so.7)
at pilotdb.ui.GUI.start(GUI.java:14)
at pilotdb.tools.Tools.main(Tools.java:92)
Caused by: java.lang.ClassNotFoundException: javax.help.HelpSet not found in gnu.gcj.runtime.SystemClassLoader{urls=[file:jpilot-db-1.3.20-ej.jar], parent=gnu.gcj.runtime.ExtensionClassLoader{urls=[], parent=null}}
at java.net.URLClassLoader.findClass(libgcj.so.7)
at java.lang.ClassLoader.loadClass(libgcj.so.7)
at java.lang.ClassLoader.loadClass(libgcj.so.7)
at java.lang.Class.initializeClass(libgcj.so.7)
...2 more



I can show for a litle moment the start gui windows, but the program close for itself.

I Use Kubuntu dapper 6.06