Hiro Asari's Devoxx 2011 presentation
Java developers wear many hats: they manage builds, develop applications, write command-line scripts, and must master all tiers. If only there were a way to make these tasks simple and fun.
Build engineers can write or enhance builds with Ruby, never losing a thing they depend on from Ant or Maven. Ruby offers several elegant testing options that work great with JRuby. Web developers can create Rails applications in minutes, effortlessly incorporating the latest Web technologies while taking advantage of the existing Java libraries. JRuby supports binding native libraries with FFI (foreign function interface). Command-line scripts? They're easy with JRuby's system-level features.
Come to this session to learn how JRuby makes you a happy developer.