Although 2 seconds of googling brings you here: https://groups.google.com/forum/#!topic/codenameone-discussions/UFgn6f5slOU
Probably you're using a version of the JDK that Codename One itself does not support. Gj On Fri, Aug 3, 2018 at 12:48 PM, Geertjan Wielenga < geertjan.wiele...@googlemail.com> wrote: > About Codename One specifically, it's best to get in touch with the > Codename One developers, i.e., they have their own mailing lists, forums, > etc. > > Thanks, > > Gj > > > On Fri, Aug 3, 2018 at 12:47 PM, A Z <powerus...@live.com.au> wrote: > >> -What is the solution for the build bug that Netbeans 9 >> leaves me with when attempting to build a new CodeName >> project? >> >> C:\Users\User\Desktop\Codename_One\build.xml:17: taskdef A class needed >> by class com.codename1.build.client.GenerateGuiSources cannot be found: >> javax/xml/bind/JAXBException using the classloader >> AntClassLoader[C:\Users\User\Desktop\Codename_One\CodeNameOn >> eBuildClient.jar] >> >> >