FWIW, there's actually a large amount of industry experience in ultra-low-latency Java kicking around the ATS/exchange/HFT space. Island's ECN was Java, and that incubated a lot of this kind of talent.
It's absolutely not your everyday java (I've heard the answer to "how do you handle gc's" is just "don't allocate memory") but it's a Thing.
It's absolutely not your everyday java (I've heard the answer to "how do you handle gc's" is just "don't allocate memory") but it's a Thing.