I'm with dws on this one. His example is much more maintainable than your original one. Hanging out on Perlmonks might make you think that lots of Perl developers are comfortable with throwing around condensed code with unusual uses of for and splitting on <>, but that just isn't the case in the rest of the world. I have a pretty good amount of professional Perl experience under my belt, and I had to stare at your code for a minute to figure out what was going on there.
When people attack Perl, they often do it on the basis of readability. That's why I think it's very important to write clean and understandable code when it's for public consumption. It's not so much a Perl vs. Java thing as a general advocacy thing. Note that I didn't say never to use Perl idioms. Just know the difference between idiomatic and confusing.
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