Mr strayneuron is complaining about things that require JDK 1.4, in particular Amazon’s Web Services API which uses RegExp.
If it needs a RegExp, why not use JDK1.4? It’s been out for over 18 months is stable, faster that 1.3 and has better features. IMHO it is better to use something in the core API than introduce an external package. I’ve used ORO fairly extensivly, but I prefer to use 1.4 RegExp when I can, even at work (where I am much more conservative with choosing mature APIs). It really is a pretty good implementation, and compares well with anything else out there.
Part of the reason the code he is complaining about is only one line is because they use 1.4 RegExp. If they had used ORO it takes at least 2 statements, plus an import. On could argue that regular expressions should have been in the language all along, which I would have to agree with.