Developers, I've added a feature to SymbolTable and W2j such that it will cache downloaded imports (and includes) to a directory specified on the command line (-C <dir>). Subsequent regens will find the cached files and not have to download them again. This is useful for us since we sometimes have to generate code when we are offline (like on a plane) or behind a slow link or when the referenced xsd is offline (rare, but it happens). It's also very convenient for locating the offending xsd file when W2j spits out the error about a type being referenced but not defined.
If others find this feature useful, I will submit a patch. Please comment. ~S
