JBuilder debug problem

Question

Hi,
I'm using JBuilder 4 ( I know its pretty old but we can't afford to keep upgrading...) and I've just reached a problem with the debugger.
My project has dozens of included libraries and as such the command line created by JBuilder has got longer and longer until now, when I get:
-- IOException starting Java runtime process --
java.io.IOException: CreateProcess: C:\JBuilder4\jdk1.3\bin\javaw -classic -classpath "long piece of text containing all the classpaths, which is then cut off, presumably because the process has run out of environment spac"
Oh yes, and I'm running on Windows 2000.
I'm guessing that either Windows or JBuilder have run out of environment space for this process. Has anyone else had this? If so, was there a workaround - I couldn't see anything on JBuilder and the Borland site isn't particularly informative.
Also, JBuilder puts in some of its own jars:
C:\JBuilder4\jdk1.3\demo\jfc\Java2D\Java2Demo.jar;C:\JBuilder4\jdk1.3\jre\lib\i18n.jar;C:\JBuilder4\jdk1.3\jre\lib\jaws.jar;C:\JBuilder4\jdk1.3\jre\lib\rt.jar;C:\JBuilder4\jdk1.3\jre\lib\sunrsasign.jar;C:\JBuilder4\jdk1.3\lib\dt.jar;C:\JBuilder4\jdk1.3\lib\tools.jar
which help to take up the environment space. I'm pretty sure that Java2Demo is not essential to my project, not sure about the others. Does anyone know how I can remove these from my debugger command line?

Answer 1

To remove libraries from your command-line, in JBuilder 4, do the following:
With your project open, click on the Project menu, then Project Properties (2nd from bottom). In the dialog, there's a tabbed pane, click on the 3rd option ('Required Libraries'), then select the libraries you want to remove and click on Remove. (Try removing all, then rebuild the project. If it complains, you have to add some back)
Removing the libs from the project doesn't remove the libs from disk, it just tells the compiler that for the given project it doesn't need to add those libs to the classpath.