XYLayout and XYConstraints classes in JBuilder Foundation v3.5 ?

Currently, I'm using the Borland JBuilder Foundation v3.5 for my java programs.

When I try to run a sample program that using XYLayout and XYConstraints
classes, the system gives me compiling error saying Can't find the above
classes.

The above classes are from "import borland.jbcl.layout.*;" and this line
is included in the program.

Note: Borland JBuilder website claims that the foundation does not support
JBCL components.

Can anyone help me on this?

Thanks in advance.

regards,
Wen Hsiang