I've setup a nightly job on Jenkins that's running ZK trunk successfully using java 7: https://builds.apache.org/view/S-Z/view/ZooKeeper/job/ZooKeeper-trunk-jdk7/
based on issues found by lucene it seems that there are serious bugs in the current jdk7 that will keep it from being used in production for the near term, however going forward it looks like ZK itself is ready to start more serious use/verification on java7. Patrick
