I noticed that the Ubuntu images on EC2 (search the Community AMIs for "oneiric") provide Java 7 if you want to try it out for yourself. I tried it out briefly

I noticed that the Ubuntu images on EC2 (search the Community AMIs for "oneiric") provide Java 7 if you want to try it out for yourself. I tried it out briefly and it worked ok for me on running Apache Zookeeper.