By default, 10.6.2 does not come with JDK 1.5. Of course, since I run with JDK 5 as well, I hacked installed it. In IntelliJ, the version specified is 1.5*, which means that if I hacked installed 1.5, it will run with it.
What is the recommended JDK to run IntelliJ on a mac? I am using IDEA 9 Beta, but would love to know also for 8. What do you guys test most with?