[news.eclipse.tools] [JDT] IClassPathEntry to File System Absolute Path

["Scott Anderson" <easie@xxxxxxxxxxxx>]

From a plugin I'm trying to retrieve all of a project's classpath entries
and convert them to an absolute file system paths.  The problem I'm running
into is with classpath entries that were added using Properties->Java Build
Path->Add Jars... which adds a jar that is already contained within a
workspace project to the path.  These particular entries are recorded with a
path that looks like /ProjectName/jarname.jar and I can't figure out how to
create the full file system path of the form
<device>/<PathToWorkspace>/ProjectName/jarname.jar.

The two pieces of code I've tried have been the following:
classpathEntry.getPath().makeAbsolute().toOSString();
and
JavaCore.getResolvedClasspathEntry(classpathEntry).getPath().makeAbsolute().
toOSString();

Yet neither will add the device and workspace path prefixes to the path.  Is
there a simple technique I'm missing?

Thanks in advance,
Scott