// let's get the rar file
try {
String uri=getAbstractArchiveUri(desc);
FileArchive arch = new FileArchive();
arch.open(uri);
for(Enumeration en = arch.entries();en.hasMoreElements();) {
String entry = (String)en.nextElement();
if (entry.endsWith(".jar")) {
// we found a jar file, let's load it
JarInputStream jis = new JarInputStream(arch.getEntry(entry));