I'm currently doing Perl development, but there's a fair bit of Java code at work .. so I'm wondering if any monks can recommend a book, website or approach they found useful when getting up to speed.

My background in Perl started in about '98, after about 15 years of developing C (with a few years of Pascal thrown in for good measure). Before that, I did development in a variety of assemblers (x86, 68000, 6809). I never did any C++, so any OO nomenclature I've picked up has been via Perl's take on OO.

What I've seen of Java is that it's very hierarchical, and is also exception based -- Try::Tiny seems to neatly encapsulate the try / catch of Java.