It's talking on Java integration with JVM-based languages. I didn't look in detail into the coding part, but I found the profiling bit rather interesting.
Two short personal questions:
1. As Java programmers, are you keeping an eye on those JVM-based non-Java languages? Or already have some hands on them? Or not quite interested?
2. Do you agree with the articles conclusion, that among those 3 tested languages, Scala is the fastest, least memory-demanding, least garbage generating, and therefore the most suited for the enterprise world?
Btw, I am not technically a Java programmer, that's partially why I came here for help...