Here's how to get IDEA 3.0 running on OS X:
- Get OS X 10.2.2
- Get JDK 1.4.1 Developer Preview 6: Sign up for the free Apple Developer Connection. Then login and go Download Software > Java > Java 1.4.1 Developer Preview 6
- Get IDEA 3.0.1 (build 688)
- Create a symbolic link to JDK: Go to the directory you unpacked idea688.tar.gz in and create a symbolic link to JDK 1.4.1. With the terminal in the IDEA dir:
ln -s /System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK jre
- Run IDEA 3.0: From the terminal in the IDEA dir run "bin/idea.sh".
- Get a evaluation key (optional): Fill out the IDEA evaluation form and wait a few minutes.
Please note that IDEA on OS X use CTRL+C/V for copy'n'pasting (instead of COMMAND+C/V). This is especially frustrating to forget on the license screen. All other hotkeys are CTRL-based as well. Hopefully IntelliJ will conform to the standard Apple way of hotkeys in the future somehow.