Usually looking into any OpenSource project is rather intimidating. But ,Jato, at the first look, did not seem that scary to me. The code base is not that large and I was somehow familiar with the field (at least I thought that !). And particularly the project owner was very nice to work with.
So , armed with git , I downloaded the source code , and started to hack on it (Who wants to go to the beach in a sunny day , when you can code ;) ) So far I have submitted patch for anewarray .
Initially ,it took times to grasp the idea . But thanks to Pekka Enberg , with his help , the ride so far is fun.