Is it possible to generate the output of my JBuilder project as a Jar file that is debuggable?.
There is the JBuilder deployment wizard which will take your .class files and wrap them up into .jar file for you.
In JBuilder 4, this can done as part of the project.
If you want to do debugging, depending on what version of JBuilder you have there is a setting that enables debugging. Normally this is called Enable Debug Info and it is found in the Project Properties, under the Compiler Tab.